Patent Description:
The present disclosure generally relates to the field of wireless communications, and in particular to an electronic device, a user equipment, a wireless communication method, and a computer readable storage medium. More specifically, the present disclosure relates to an electronic device as a network side device in a wireless communication system, a user equipment in a wireless communication system, a wireless communication method performed by a network side device in a wireless communication system, a wireless communication method performed by a user equipment in a wireless communication system and a computer readable storage medium.

A random access process is a process from a user equipment transmitting a random access preamble for trying to access a network side device to the user equipment establishing a connection with the network side device. The random access process includes a process in which the user equipment transmits a random access preamble to the network side device and a process in which the user equipment obtains a TA (Timing Advance).

In order for uplink information transmitted by the user equipment to reach the network side device at a desired time distant to ensure the orthogonality of uplink transmission and reduce intra-cell interference, it is required for the user equipment to transmit the uplink information some time in advance. TA represents a timing advance for the user equipment to transmit the uplink information in advance. For the accuracy of TA, it is required to update the value of the TA of the user equipment at regular intervals. In addition, the value of the TA is usually related to the distance between the user equipment and the network side device. A greater distance indicates that the value of the TA is greater. In a non-terrestrial network (NTN), the network side device may be located on a satellite device, thus the TA may be frequently updated due to movement of a non-GEO (Geosynchronous Orbit) satellite device relative to the ground, resulting in large signaling overhead.

In addition, in the random access process, the user equipment transmits a random access preamble to the network side device to inform the network side device of a random access request, so that the network side device may estimate the value of the TA based on the random access preamble. In a NTN, since the satellite device covers a wide area, random access preambles from user equipment in different locations may arrive at the satellite at the same time. In a case that the user equipment in different locations transmits random access preambles by using the same resource, intense collisions occur, resulting in random access failures.

For the above problems, it is required to provide a technical solution to reduce the signaling overhead caused by the update of TA, reduce the probability of random access preamble collision, and increase the probability of successful random access. Cited references include <CIT>, which discloses method of adjusting uplink timing in a wireless communication system, and <CIT>, which discloses an LTE satellite uplink synchronization method based on TA grouping.

A brief summary of the present disclosure is given hereinafter, rather than a comprehensive disclosure of the full scope of the present disclosure or all features of the present disclosure.

With the present disclosure, the service region of the electronic device serving as the network side device is divided into multiple TAG regions, each of the TAG corresponds to a TA value, and the user equipment may use the TA value corresponding to the TAG allocated for the user equipment as the TA value between the user equipment and the electronic device. Thus, the TA value is configured and updated for each of the TAGs, so that the user equipments in the same TAG uses the same TA value, avoiding configuring and updating the TA value for each of user equipments, thereby reducing signaling overhead caused by updating TA values.

Furthermore, with the present disclosure, the service region of the electronic device serving as the network side device is divided into multiple resource regions, and each of the resource regions is configured with resources for transmitting preambles. Thus, user equipments in a same resource region transmit preambles using same resources, and user equipments in different resource regions transmit preambles using orthogonal resources, reducing the probability of collision of preambles, thereby increasing the probability of success with one access operation.

Descriptions and examples in this summary are only schematic and are not intended to limit the scope of the present disclosure.

The drawings described herein only illustrate the selected embodiments, rather than all embodiments. The drawings are not intended to limit the scope of the present disclosure. In the drawings:.

Although the present disclosure may be susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of examples in the drawings and have been described in detail herein. However, it should be understood that the description of specific embodiments herein is not intended to limit the present disclosure to the particular forms disclosed, but rather to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure. It should be noted that same or similar reference numerals are used throughout the drawings to refer to the same or like parts.

The embodiments of the present disclosure will be described completely in conjunction with the drawings. The following description is only exemplary, and is not intended to limit the present disclosure, and applications or usages thereof.

Exemplary embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Numerous specific details, such as examples of specific components, devices, and methods, are described to provide a detailed understanding of the embodiments of the present disclosure. It is apparent for those skilled in the art that the exemplary embodiments may be implemented in many different forms without specific details, and should not be construed to limit the scope of the present disclosure. In some exemplary embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.

The descriptions are provided in the following order:.

<FIG> is a block diagram showing a configuration example of an electronic device <NUM> according to an embodiment of the present disclosure. The electronic device <NUM> may be used as a network side device in a wireless communication system, and specifically may be used as a base station device in the wireless communication system.

According to an embodiment of the present disclosure, the wireless communication system may include a TN or an NTN. That is, the electronic device <NUM> may be a network side device located on the ground, or a network side device located on a satellite device.

As shown in <FIG>, the electronic device <NUM> may include a division unit <NUM>, a determination unit <NUM>, a generation unit <NUM>, and a communication unit <NUM>.

All the units of the electronic device <NUM> may be included in processing circuitry. It should be noted that the electronic device <NUM> may include one processing circuitry or multiple processing circuitry. Further, the processing circuitry may include various discrete functional units to perform various functions and/or operations. It should be noted that the functional units may be physical entities or logical entities, and units with different titles may be implemented by the same physical entity.

According to an embodiment of the present disclosure, the division unit <NUM> may be configured to divide a service region of the electronic device <NUM> into multiple regions based on location information, and allocate one or more user equipments in each of the regions to a same TAG The user equipments in each of the regions belong to the same TAG, that is, the regions correspond to the TAGs one-to-one, thus the regions are referred to as TAG regions in the present disclosure.

According to an embodiment of the present disclosure, the determination unit <NUM> may be configured to determine a TA value corresponding to each of the TAGs.

According to an embodiment of the present disclosure, the generation unit <NUM> may be configured to generate TA information. The TA information includes a TA value corresponding to a TAG allocated for a user equipment.

According to an embodiment of the present disclosure, the electronic device <NUM> may be configured to transmit the TA information generated by the generation unit <NUM> to the user equipment via the communication unit <NUM>. The user equipment uses the TA value corresponding to the TAG allocated for the user equipment as a TA value between the user equipment and the electronic device <NUM>.

As described above, the service region of the electronic device <NUM> according to the present disclosure is divided into multiple TAG regions, each of the TAG corresponds to a TA value, and the user equipment may use the TA value corresponding to the TAG allocated for the user equipment as the TA value between the user equipment and the electronic device <NUM>. Thus, the TA value is configured and updated for each of the TAGs, so that the user equipments in the same TAG uses the same TA value, avoiding configuring and updating the TA value for each of user equipments, thereby reducing signaling overhead caused by updating TA values.

<FIG> is a schematic diagram showing TAG regions and division of TAGs according to an embodiment of the present disclosure. In <FIG>, the electronic device <NUM> may be located on a satellite device. <FIG> shows an example of four TAG regions in the service region of the electronic device <NUM>. The four TAG regions correspond to four TAGs: TAG1, TAG2, TAG3, and TAG4. UE1, UE2, and UE3 in a first TAG region are allocated to TAG1, UE4 in a second TAG region is allocated to TAG2, UE5 in a third TAG region is allocated to TAG3, and UE6 in a fourth TAG region is allocated to TAG4. For ease of description, <FIG> only shows four TAGs, and there may actually be more or fewer TAGs.

According to an embodiment of the present disclosure, the division unit <NUM> may be configured to determine a size of each of the TAG regions based on a TA resolution requirement of the wireless communication system where the electronic device <NUM> is located. For example, the division unit <NUM> may determine the size of each of the TAG regions based on a predetermined threshold for differences between TA values of the user equipments in each of the TAG regions. In addition, the shapes of the TAG regions may be flexible, and may be two-dimensional shapes or three-dimensional shapes. The two-dimensional shapes include, but are not limited to, rectangles, circles and hexagons. The three-dimensional shapes include, but are not limited to, spheres.

According to an embodiment of the present disclosure, the determination unit <NUM> may be configured to determine a TA value corresponding to each of the TAGs. <FIG> is a schematic diagram showing a mapping relationship between TAGs and TA values that is determined by the determination unit <NUM> according to an embodiment of the present disclosure. As shown in <FIG>, TAG1 corresponds to TA value <NUM>, TAG2 corresponds to TA value <NUM>, TAG3 corresponds to TA value <NUM>, and TAG4 corresponds to TA value <NUM>.

Therefore, each of the TAGs corresponds to a TA value, so that each of the user equipments in the TAG uses the TA value as the TA value between the user equipment and the electronic device <NUM>. Compared with configuring and updating a TA value is for each of the user equipments according to the traditional technology, the TA value is configured and updated for each of the TAGs according to the present disclosure, effectively reducing complexity of updating TA values, and thereby reducing signaling overhead caused by updating TA values.

It should be noted that the TAG according to the present disclosure is different from the TAG according to the conventional technology. According to the conventional technology, the TAG usually includes multiple serving cells with a same TA value. That is, the TA values between the user equipment and the serving cells in the TAG are the same. According to the present disclosure, TAG includes user equipments with a same TA value. That is, the TA values between the user equipments in the TAGs and the electronic device <NUM> are the same.

According to an embodiment of the present disclosure, the determination unit <NUM> may be configured to determine a TA value between each of the user equipments and the electronic device <NUM>. For example, the determination unit <NUM> may determine a TA value between a user equipment and the electronic device <NUM> based on a random access preamble transmitted by the user equipment. Further, the determination unit <NUM> may determine a TA value corresponding to a TAG based on TA values between all user equipments in the TAG and the electronic device <NUM>. For example, the determination unit <NUM> may perform an algorithm, such as average or weighted average, on the TA values between all the user equipments in the TAG and the electronic device <NUM> to determine the TA value corresponding to the TAG.

According to an embodiment of the present disclosure, the division unit <NUM> may be configured to allocate a TAG to the user equipment based on location information of the user equipment.

According to an embodiment of the present disclosure, the electronic device <NUM> may be configured to obtain location information of a user equipment from the user equipment via the communication unit <NUM>. For example, the electronic device <NUM> may obtain the location information of the user equipment through MSG3 (message <NUM>) in a random access process with four steps. The electronic device <NUM> may obtain location information of a user equipment through MSG1 (message <NUM>) in a random access process with two steps. Further, the division unit <NUM> may be configured to determine a TAG to which the user equipment belongs based on the location information of the user equipment.

According to an embodiment of the present disclosure, the electronic device <NUM> may be configured to transmit identification information of the TAG allocated for the user equipment to the user equipment.

According to an embodiment of the present disclosure, the electronic device <NUM> may be configured to assign a globally unique identifier to each of the TAGs in the service region of the electronic device <NUM>. Each of TAGs in service regions of other network side devices may also be assigned a globally unique identifier. The globally unique identifiers of the TAGs may be called G-TAG IDs. The electronic device <NUM> may determine a G-TAG ID for the TAG to which the user equipment belongs based on the location information of the user equipment, and transmit the G-TAG ID allocated for the user equipment to the user equipment.

According to an embodiment of the present disclosure, the user equipment may store location information of each of the TAG regions and the corresponding G-TAG ID in advance. The location information of each of the TAG regions may be provided based on the shape of the TAG region. For example, location information of a TAG region in a rectangular shape may include coordinates of two points on a diagonal, location information of a TAG region in a circular shape may include coordinates of an origin and a value of a radius, location information of a TAG region in a hexagonal shape may include coordinates of a center point and a value of a side length, and location information of a TAG region in a spherical shape may include coordinates of a center point and a value of a radius. In addition, the location information of each of the TAG regions is information about an absolute location of the TAG region in space.

According to an embodiment of the present disclosure, the electronic device <NUM> may be configured to allocate a cell unique identifier for each of the TAGs in the service region of the electronic device <NUM>. The locally unique identifier may be called L-TAG ID. Since the user equipment stores the G-TAG ID of each of the TAG regions in advance and does not know the L-TAG ID of the TAG region, the electronic device <NUM> may determine an L-TAG ID of the TAG to which the user equipment belongs based on the location information of the user equipment, and transmit the L-TAG ID allocated for the user equipment to the user equipment. In this way, the number of bits of the L-TAG ID is much smaller than the number of bits of the G-TAG ID, thereby greatly reducing the signaling overhead between the electronic device <NUM> and the user equipment.

According to an embodiment of the present disclosure, the TA information generated by the generation unit <NUM> may include: identification information of TAGs in the service region of the electronic device <NUM> and TA values corresponding to the TAGs. The electronic device <NUM> may broadcast the TA information.

<FIG> is a schematic diagram showing TA information received by UE1 in <FIG> according to an embodiment of the present disclosure. As shown in <FIG>, the TA information received by UE1 includes identification information of each of TAGs from TAG1 to TAG4 and TA values corresponding to the TAGs. Since the TA information is broadcasted, TA information received by each of the UEs in <FIG> is as shown in <FIG>.

According to an embodiment of the present disclosure, the TA information generated by the generation unit <NUM> may include: identification information of the TAG allocated for the user equipment and a TA value corresponding to the TAG allocated for the user equipment. The electronic device <NUM> may multicast the TA information.

<FIG> is a schematic diagram showing TA information received by UE1 in <FIG> according to another embodiment of the present disclosure. As shown in <FIG>, since UE1 belongs to TAG1, the TA information received by UE1 includes identification information of TAG1 and a TA value <NUM> corresponding to TAG1.

In this case, the TA information received by the user equipment only includes the identification information of the TAG to which the UE belongs and the TA value corresponding to the TAG For another example, TA information received by UE2 in <FIG> includes the identification information of TAG1 and the TA value <NUM> corresponding to TAG1; TA information received by UE3 in <FIG> includes the identification information of TAG1 and the TA value <NUM> corresponding to TAG1; TA information received by UE4 in <FIG> includes identification information of TAG2 and a TA value <NUM> corresponding to TAG2; TA information received by the UE5 in <FIG> includes identification information of TAG3 and a TA value <NUM> corresponding to TAG3; and TA information received by UE6 in <FIG> includes identification information of TAG4 and a TA value <NUM> corresponding to TAG4.

According to an embodiment of the present disclosure, the generation unit <NUM> may be configured to configure different RNTIs (radio network temporary identifiers) for each of the TAGs in the service region of the electronic device <NUM>, and scramble the TA information using a RNTI corresponding to the TAG allocated for the user equipment. That is, the generation unit <NUM> may configure RNTI1 for TAG1, RNTI2 for TAG2, RNTI3 for TAG3, and RNTI4 for TAG4. The generation unit <NUM> may scramble the TA information transmitted to UE1 to UE3 using RNTI1, scramble the TA information transmitted to UE4 using RNTI2, scramble the TA information transmitted to UE5 using RNTI3, and scramble the TA information transmitted to UE6 using RNTI4.

According to an embodiment of the present disclosure, the generation unit <NUM> may be configured to determine a RNTI corresponding to a TAG based on identification information of the TAG (preferably L-TAG ID). The user equipment may determine the RNTI corresponding to the TAG based on the identification information of the TAG In this way, the user equipment descrambles received TA information based on a corresponding RNTI to obtain the content of the TA information.

According to an embodiment of the present disclosure, the multiple TAG regions in the service region of the electronic device <NUM> may be grouped into multiple TAG clusters. The TA information generated by the generation unit <NUM> may include identification information of TAGs in a TAG cluster in which the TAG allocated for the user equipment is included and TA values corresponding to the TAGs. The electronic device <NUM> may multicast the TA information.

<FIG> is a schematic diagram showing TA information received by UE1 in <FIG> according to another embodiment of the present disclosure. It is assumed that the TAGs in <FIG> is grouped into clusters, TAG1 and TAG3 are included in a first TAG cluster, and TAG2 and TAG4 are included in a second TAG cluster. As shown in <FIG>, since UE1 belongs to TAG1, the TA information received by UE1 includes identification information of TAGs (TAG1 and TAG3) in a TAG cluster in which TAG1 is included and TA values corresponding to the TAGs.

In this case, the generation unit <NUM> may be configured to configure an unique RNTI for each of the TAG clusters, and scramble the TA information using a RNTI corresponding to the TAG cluster in which the TAG allocated for the user equipment is included. That is, the generation unit <NUM> may allocate RNTI1 for a first TAG cluster, allocate RNTI2 for a second TAG cluster, scramble the TA information received by UE1, UE2, UE3, and UE5 using RNTI1, and scramble the TA information received by UE4 and UE6 using RNTI2.

According to an embodiment of the present disclosure, the generation unit <NUM> may be configured to determine a RNTI corresponding to a TAG based on identification information (preferably L-TAG ID) of the TAG For example, assuming that the number of RNTI is N, that is, the number of TAG clusters is N, and the initial RNTI is RNTI<NUM>, the process of determining a RNTI based on the identification information of the TAG may be performed as follows. First, an offset value of RNTI is calculated by using the following equation: <MAT> (where % represents a remainder operation)
Then, calculation is performed by using the following equation: <MAT> That is, TAGs with the same RNTI are included in the same TAG cluster. The TAGs are grouped into N clusters, and each of the clusters corresponds to an RNTI. In addition, the user equipment may determine a RNTI corresponding to a TAG based on TAG ID by using a similar method. In this way, the user equipment may descramble the TA information based on a corresponding RNTI to obtain the TA information, and further determine the TA value corresponding to the TAG where the user equipment is located based on the identification information of the TAG Apparently, the process of determining a RNTI corresponding to a TAG based on the identification information of the TAG is not limited to the above embodiment.

According to the embodiments of the present disclosure, the TAGs are grouped into clusters, and an uique RNTI is assigned to each of the clusters, effectively avoiding the problem of insufficient RNTI due to too many TAGs.

According to an embodiment of the present disclosure, in a case that the user equipment stores the location information of each of the TAG regions and the corresponding G-TAG ID, the user equipment may determine whether it is required to update the L-TAG ID based on the location information of the user equipment. For example, in a case that the user equipment moves out of the TAG where the user equipment is originally located, the user equipment may determine to update the L-TAG ID. According to an embodiment of the present disclosure, the electronic device <NUM> may be configured to receive updated location information from the user equipment, re-allocate a TAG to the user equipment based on the updated location information of the user equipment, and transmit identification information (preferably L -TAG ID) of the re-allocated TAG to the user equipment. The electronic device <NUM> may be configured to re-determine TA information based on the change of the TAG allocated for the user equipment. For example, in a case that a TAG does not include any user equipment due to the movement of one or some user equipments, the determination unit <NUM> does not determine a TA value corresponding to the TAG, and the generation unit <NUM> may delete identification information and a TA value corresponding to the TAG from the TA information.

<FIG> is a schematic diagram showing TAG regions and division of TAGs after UE5 moves. As shown in <FIG>, UE5 moves out of TAG3 where UE5 is originally located. In this case, UE5 may transmit updated location information to the electronic device <NUM>, and receive identification information of a TAG (that is, identification information of TAG2) newly allocated for UE5 from the electronic device <NUM>. Since TAG3 no longer includes any user equipment, TA values corresponding to TAGs, determined by the determination unit <NUM>, no longer includes the TA value corresponding to TAG3.

<FIG> is a schematic diagram showing a mapping relationship between TAGs and TA values after UE5 moves. As shown in <FIG>, TAG1 includes UE1 to UE3, TAG2 includes UE4 and UE5, and TAG4 includes UE6. The determination unit <NUM> determines a TA value <NUM> corresponding to TAG1, a TA value <NUM> corresponding to TAG2, and a TA value <NUM> corresponding to TAG4.

According to an embodiment of the present disclosure, the electronic device <NUM> may carry the TA information generated by the generation unit <NUM> through a TAC (Timing Advance Command), and transmit the TAC on a PDSCH (Physical Downlink Shared Channel). The TAC may be carried through MAC CE. <FIG> is a schematic diagram showing a content of MAC CE according to an embodiment of the present disclosure. As shown in <FIG>, the MAC CE may include a TAG ID field and a TAC field, and the TAG ID field preferably includes an L-TAG ID.

According to an embodiment of the present disclosure, the generation unit <NUM> may periodically generate updated TA information, and the electronic device <NUM> may periodically broadcast or multicast the TA information generated by the generation unit <NUM>.

<FIG> is a schematic diagram showing a movement process of a satellite according to an embodiment of the present disclosure. As shown in <FIG>, it is assumed that the satellite moves from point A to point B, point C is an intersection of a line (from a earth center O to point A) and the ground. In a case that |BC-AC|≥Tcp*c, it is determined to update the TA value corresponding to point C, where Tcp is equal to <NUM> and represents a length of CP, and c is equal to <NUM>* <NUM><NUM>m/s and represents the speed of light. That is, the time period for the satellite to move from point A to point B may be considered as a maximum period for updating the TA information. It is well known that the average radius r of the earth is equal to <NUM>, and the height h of the satellite is set to <NUM>. Thus, the time period T for the satellite to move from point A to point B may be calculated by using the following equations: <MAT> <MAT>.

In the above equations, α represents an angle between OA and OB, TS2E represents a period of the satellite moving around the earth, and is set to <NUM> minutes in a case of a LEO (Low Earth Orbit) satellite.

Therefore, a maximum period for TA information to be updated is approximately equal to <NUM> seconds. According to an embodiment of the present disclosure, the update period for TA information may be set to several hundreds of milliseconds to several seconds.

As described above, according to an embodiment of the present disclosure, the electronic device <NUM> may periodically update the TA value corresponding to each of the TAGs, and the electronic device <NUM> may periodically broadcast or multicast the TA information, applying to a communication system including a TN, a communication system including an NTN, or a communication system including a TN and an NTN.

For a UE with multi-connection capability, the UE may connect to an NTN-gNB and a TN-gNB simultaneously. Due to the high transmission power and short connection time of the UE due to the long communication distance and fast movement of the satellite, the NTN is usually used as a supplement to TN coverage. That is, in a scenario, a TN-gNB may be used as a primary cell (PCell), and an NTN-gNB can be used as a secondary cell (SCell). In a case of a low traffic load, the SCell may be deactivated, and the NTN-gNB does not obtain any information from the UE for a long time.

<FIG> is a schematic diagram showing a scenario in which a UE with multi-connection capability is connected to a TN-gNB and to an NTN-gNB according to an embodiment of the present disclosure. As shown in <FIG>, the UE is connected to both NTN-gNB and TN-gNB simultaneously. TN-gNB is used as a PCell, and NTN-gNB is used as a SCell. The UE communicates with the TN-gNB through a PCell link, and communicates with the NTN-gNB through a SCell link. It is assumed that the SCell is deactivated. According to the embodiments of the present disclosure, the TN-gNB may be used to assist the NTN-gNB in allocating or reallocating TAGs for UEs.

According to an embodiment of the present disclosure, in a case that the electronic device <NUM> is a network side device located on a satellite device, the electronic device <NUM> may be configured to receive location information of a user equipment from a network side device located on the ground, and allocate a TAG for the user equipment based on the location information of the user equipment. Further, the electronic device <NUM> may transmit identification information of the TAG allocated for the user equipment to the network side device on the ground, so that the network side device on the ground transmits the identification information of the TAG allocated for the user equipment to the user equipment. In this case, the user equipment is simultaneously connected to the electronic device <NUM> and the network side device located on the ground.

<FIG> is a signaling flowchart showing a TN-gNB assisting an NTN-gNB to update a TAG ID of a UE according to an embodiment of the present disclosure. In <FIG>, the NTN-gNB may be implemented by the electronic device <NUM>. As shown in <FIG>, in step S1201, in a case that the UE is to wake up the SCell, the UE transmits location information to the TN-gNB. In step S1202, the TN-gNB forwards the location information of the UE to the NTN-gNB. In step S1203, the NTN-gNB allocates a TAG for the UE based on the location information of the UE. In step S1204, the NTN-gNB transmits an ID of the allocated TAG to the TN-gNB. In step S1205, the TN-gNB forwards the ID of the allocated TAG to the UE. In step S1206, the UE updates the TAG ID stored in the UE. In step S1207, the NTN-gNB broadcasts the TA information. In step S1208, the UE searches for a TA value corresponding to the updated TAG ID in the TA information based on the updated TAG ID. Thus, with the assistance of the TN-gNB, the UE obtains the updated TAG ID and obtains the TA value based on the updated TAG ID.

<FIG> is a signaling flowchart showing a TN-gNB assisting an NTN-gNB to update a TAG ID of a UE according to another embodiment of the present disclosure. In <FIG>, the NTN-gNB may be implemented by the electronic device <NUM>. As shown in <FIG>, in step S1301, in a case that the UE is to wake up the SCell, the UE transmits location information to the TN-gNB. In step S1302, the TN-gNB forwards the location information of the UE to the NTN-gNB. In step S1303, the NTN-gNB allocates a TAG for the UE based on the location information of the UE. In step S1304, the NTN-gNB transmits an ID of the allocated TAG to the TN-gNB. In step S1305, the TN-gNB forwards the ID of the allocated TAG to the UE. In step S1306, the UE updates the TAG ID and RNTI stored in the UE. In step S1307, the NTN-gNB multicasts the TA information. In step S1308, the UE descrambles the received TA information with the updated RNTI to obtain a TA value corresponding to the updated TAG ID. In a case that the TAGs are grouped into clusters, the UE descrambles the received TA information based on the updated RNTI to obtain TAG IDs and TA values of TAGs in a TAG cluster where the TAG to which the UE belongs is included, and then determines a TA value corresponding to the TAG to which the UE belongs based on the updated TAG ID. Thus, with the assistance of the TN-gNB, the UE obtains the updated TAG ID and obtains the TA value based on the updated TAG ID.

As described above, with the electronic device <NUM> according to the present disclosure, the service region of the electronic device <NUM> serving as the network side device is divided into multiple TAG regions, each of the TAG corresponds to a TA value, and the user equipment may use the TA value corresponding to the TAG allocated for the user equipment as the TA value between the user equipment and the electronic device. Further, the electronic device <NUM> may periodically update the TA value of each of the TAGs, and broadcast or multicast the TA information. Thus, the TA value is configured and updated for each of the TAGs, so that the user equipments in the same TAG uses the same TA value, avoiding configuring and updating the TA value for each of user equipments, thereby reducing signaling overhead caused by updating TA values.

According to an embodiment of the present disclosure, as shown in <FIG>, the electronic device <NUM> may further include a division unit <NUM>, a configuration unit <NUM>, and a generation unit <NUM>.

According to an embodiment of the present disclosure, the division unit <NUM> may be configured to divide a service region of the electronic device <NUM> into multiple regions based on location information.

According to an embodiment of the present disclosure, the configuration unit <NUM> may be configured to configure, for each of the resource regions, resources for transmitting preambles, so that user equipments in a same resource region transmit preambles using same resources, and user equipments in different resource regions transmit preambles using orthogonal resources. Since the regions divided by the division unit <NUM> is used to distinguish resources for transmitting preambles, that is, the regions correspond to the resources for transmitting the preambles one-to-one, the regions are referred to as resource regions in the present disclosure.

According to an embodiment of the present disclosure, the generation unit <NUM> may be configured to generate service region information. The electronic device <NUM> may transmit the service region information of the electronic device <NUM> to the user equipment via the communication unit <NUM>. The user equipment determines a resource region to which the user equipment belongs based on location information of the user equipment and the service region information of the electronic device, and determines resources for transmitting a preamble based on the resource region to which the user equipment belongs to transmit the preamble.

As described above, the service region of the electronic device <NUM> serving as the network side device is divided into multiple resource regions, and each of the resource regions is configured with resources for transmitting preambles. Thus, user equipments in a same resource region transmit preambles using same resources, and user equipments in different resource regions transmit preambles using orthogonal resources. In this way, user equipments in different locations can use orthogonal resources, reducing the probability of collision of preambles, thereby increasing the probability of success with one access operation.

According to an embodiment of the present disclosure, the division unit <NUM> divides the service region of the electronic device <NUM> into multiple resource regions, and the division unit <NUM> divides the service region of the electronic device <NUM> into multiple TAG regions. The division unit <NUM> and the division unit <NUM> perform completely independent division processes. Generally, the sizes of the resource regions divided by the division unit <NUM> are larger than the sizes of the TAG regions divided by the division unit <NUM>.

<FIG> is a schematic diagram showing division of resource regions according to an embodiment of the present disclosure. As shown in <FIG>, the electronic device <NUM> is implemented as a network side device located on a satellite device. The service region of the electronic device <NUM> is in a circular shape, and is divided into multiple resource regions. Each of the each resource regions is in a fan shape. Although <FIG> shows an example in which the resource region is in a fan shape, the resource region is not limited to in the fan shape and may be in any shape. In addition, the resource region may be in a two-dimensional shape or a three-dimensional shape.

According to an embodiment of the present disclosure, the resources for transmitting preambles include time domain resources and frequency domain resources. That is, the configuration unit <NUM> configures time domain resources and frequency domain resources for transmitting preambles for each of the resource regions. Further, orthogonal resources may include resources that are orthogonal in time domain or resources that are orthogonal in frequency domain. That is, in a case that two resources are orthogonal in at least one of the time domain and the frequency domain, the two resources are orthogonal resources.

<FIG> is a schematic diagram showing a mapping relationship between resource regions and resources for transmitting preambles according to an embodiment of the present disclosure. As shown in <FIG>, the service region of the electronic device <NUM> includes N resource regions. The configuration unit <NUM> configures resources of subframe <NUM> and RB1 for resource region <NUM> for transmitting preambles, configures resources of subframe <NUM> and RB2 for resource region <NUM> for transmitting preambles, configures resources of subframe <NUM> and RB3 for resource region <NUM> for transmitting preambles,. , and configures resources of subframe N and RBN for resource region N for transmitting preambles. <FIG> shows a situation in which resources are orthogonal in both the time domain and the frequency domain. In practice, the resources may be orthogonal in the time domain or the frequency domain.

According to an embodiment of the present disclosure, both the user equipment and the electronic device <NUM> may be configured to pre-store the location information of each of the resource regions and the resources configured for each of the resource regions for transmitting preambles. It should be noted that the location information of each of the resource regions is information about a relative location of the resource region in the service region of the electronic device <NUM>, and the user equipment does not know the absolute location of each of the resource regions in space. That is, the user equipment only knows that resource region <NUM> is a region located at upper right of the service region of the electronic device <NUM>, and does not know the actual location of the resource region <NUM> in space. The reason is that the location of the service region of the electronic device <NUM> in space is changeable.

According to an embodiment of the present disclosure, the generation unit <NUM> may be configured to generate service region information of the electronic device <NUM>, that is, location information of the service region of the electronic device <NUM>. For example, in a case that the service region of the electronic device <NUM> is a circular region, the service region information generated by the generation unit <NUM> may include a location of the center O of the circular region and a size of the radius R of the circular region. Further, the electronic device <NUM> may be configured to broadcast the service region information of the electronic device <NUM>. Therefore, after obtaining the service region information of the electronic device <NUM>, the user equipment determines an absolute location of the service region of the electronic device in space, and then determines an absolute location of each of the resource regions in space based on the pre-stored relative location of the resource region in the service region of the electronic device <NUM>. Further, the user equipment may determine the resource region where the user equipment is located based on the location information of the user equipment, and then may determine resources for transmitting a preamble based on the mapping relationship between the resource regions and the resources.

In the foregoing, the process of the electronic device <NUM> dividing the TAG regions so that the user equipment obtains the TA value and the process of the electronic device <NUM> dividing the resource regions so that the user equipment obtains resources for transmitting preambles are described. It should be understood by those skilled in the art that these two processes are independent. That is, in order to perform the process of dividing TAG regions so that the user equipment obtains the TA value according to the embodiments of the present disclosure, the electronic device <NUM> may include a division unit <NUM>, a determination unit <NUM>, a generation unit <NUM>, and a communication unit <NUM>. Further, in order to perform the process of dividing resource regions so that the user equipment obtains resources for transmitting preambles according to the embodiments of the present disclosure, the electronic device <NUM> may include a division unit <NUM>, a configuration unit <NUM>, a generation unit <NUM>, and a communication unit <NUM>. Apparently, the electronic device <NUM> may include all the units shown in <FIG> to perform the above two processes.

<FIG> are signaling flowcharts respectively showing a process of transmitting a preamble and obtaining a TA value according to the embodiments of the present disclosure. In <FIG>, the electronic device <NUM> may be used to implement a gNB.

As shown in <FIG>, in step S1601, a gNB transmits service region information of the gNB to a UE. In step S1602, the UE determines a location of each of resource regions based on the service region information of the gNB, determines a resource region where the UE is located based on the location of the UE, and determines resources for transmitting a preamble according to a mapping relationship between resource regions and resources. In step S1603, the UE transmits MSG1 (message <NUM>) to the gNB, that is, transmits a preamble on a PRACH (Physical Random Access Channel) based on the resources determined in step S1602. In step S1604, the gNB calculates an initial TA value between the UE and the gNB based on a received preamble. In step S1605, the gNB transmits MSG2 (message <NUM>), that is, a random access response, to the UE, where MSG2 includes the TA value calculated in step S1604. In step S1606, the UE transmits MSG3 (message <NUM>) to the gNB by using the received TA value, where MSG3 includes the location information of the UE. In step S1607, the gNB determines a TAG ID of a TAG to which the UE belongs based on the location information of the UE. In step S1608, the gNB transmits MSG4 (message <NUM>) to the UE, where MSG4 includes the ID of the TAG to which the UE belongs. In step S1609, the gNB determines a TA value of each of TAGs based on the TA values of the UEs, and generates TA information to be transmitted. In step S1610, the gNB broadcasts the TA information, and the TA information includes the ID of each of TAGs and the corresponding TA value. In step S1611, the UE searches for a TA value, corresponding to the TAG ID, from the TA information based on the TAG ID, and uses the searched TA value as a TA value between the UE and the gNB. As shown in <FIG>, the random access process between the UE and the gNB is performed in four steps, and the gNB broadcasts the TA information.

As shown in <FIG>, in step S1701, a gNB transmits service region information of the gNB to a UE. In step S1702, the UE determines a location of each of resource regions based on the service region information of the gNB, determines a resource region where the UE is located based on the location of the UE, and determines resources for transmitting a preamble according to a mapping relationship between resource regions and resources. In step S1703, the UE transmits MSG1 (message <NUM>) to the gNB, that is, transmits a preamble on a PRACH (Physical Random Access Channel) based on the resources determined in step S1702. In step S1704, the gNB calculates an initial TA value between the UE and the gNB based on a received preamble. In step S1705, the gNB transmits MSG2 (message <NUM>), that is, a random access response, to the UE, where MSG2 includes the TA value calculated in step S1704. In step S1706, the UE transmits MSG3 (message <NUM>) to the gNB by using the received TA value, where MSG3 includes the location information of the UE. In step S1707, the gNB determines a TAG ID of a TAG to which the UE belongs based on the location information of the UE. In step S1708, the gNB transmits MSG4 (message <NUM>) to the UE, where MSG4 includes the ID of the TAG to which the UE belongs. In step S1709, the gNB determines a TA value of each of TAGs based on the TA values of the UEs, and generates TA information to be transmitted. In step S1710, the gNB broadcasts the TA information, and the TA information includes the ID of each of TAGs and the corresponding TA value. In step S1711, the UE determines a RNTI based on the TAG ID, descrambles the TA information based on the RNTI, and determines the TA information corresponding to the TAG as a TA value between the UE and the gNB. In an embodiment, in step S1710, the gNB multicasts the TA information, and the TA information may include TAGs in the TAG cluster where the TAG to which the UE belongs is included and corresponding TA values. In step S1711, the UE determines a RNTI based on the TAG ID, and descrambles the TA information based on the RNTI to determine the TAGs in the TAG cluster where the TAG to which the UE belongs is included and the corresponding TA values. Further, the UE determines a TA value corresponding to a TAG to which the UE belongs based on the TAG ID of the TAG, and uses TA value as a TA value between the UE and the gNB. As shown in <FIG>, the random access process between the UE and the gNB is performed in four steps, and the gNB multicasts the TA information.

As shown in <FIG>, in step S1801, a gNB transmits service region information of the gNB to a UE. In step S1802, the UE determines a location of each of resource regions based on the service region information of the gNB, determines a resource region where the UE is located based on the location of the UE, and determines resources for transmitting a preamble according to a mapping relationship between resource regions and resources. In step S1803, the UE transmits MSG1 (message <NUM>) to the gNB, that is, the UE transmits a preamble on an ePRACH (enhanced Physical Random Access Channel) based on the resources determined in step S1802. In addition, MSG1 also includes location information of the UE. In step S1804, the gNB determines a TAG ID of a TAG to which the UE belongs based on the location information of the UE, calculates a TA value between the UE and the gNB based on the received preamble, determines a TA value of each of the TAGs based on TA values of UEs, and generates TA information to be transmitted. In step S1805, the gNB transmits MSG2 (message <NUM>) to the UE, and MSG2 includes the ID of the TAG to which the UE belongs. In step S1806, the gNB broadcasts the TA information, and the TA information includes the ID of each of the TAGs and the corresponding TA values. In step S1807, the UE searches for a TA value corresponding to the TAG ID from the TA information based on the TAG ID as a TA value between the UE and the gNB. As shown in <FIG>, the random access process between the UE and the gNB is performed in two steps, and the gNB broadcasts the TA information.

As shown in <FIG>, in step S1901, a gNB transmits service region information of the gNB to a UE. In step S1902, the UE determines a location of each of resource regions based on the service region information of the gNB, determines a resource region where the UE is located based on the location of the UE, and determines resources for transmitting a preamble according to a mapping relationship between resource regions and resources. In step S1903, the UE transmits MSG1 (message <NUM>) to the gNB, that is, the UE transmits a preamble on an ePRACH (enhanced Physical Random Access Channel) based on the resources determined in step S1902. In addition, MSG1o includes location information of the UE. In step S1904, the gNB determines a TAG ID of a TAG to which the UE belongs based on the location information of the UE, calculates a TA value between the UE and the gNB based on the received preamble, determines a TA value of each of the TAGs based on TA values of UEs, and generates TA information to be transmitted. In step S1905, the gNB transmits MSG2 (message <NUM>) to the UE, and MSG2 includes the ID of the TAG to which the UE belongs. In step S1906, the gNB multicasts the TA information, and the TA information may include the ID of the TAG to which the UE belongs and the corresponding TA value. In step S1907, the UE determines a RNTI based on the TAG ID, descrambles the TA information based on the RNTI, and determines TA information corresponding to the TAG as a TA value between the UE and the gNB. In an embodiment, in step S1906, the gNB multicasts the TA information, and the TA information may include TAGs in a TAG cluster where the TAG to which the UE belongs is included and the corresponding TA values. In step S1907, the UE determines a RNTI according to the TAG ID, and descrambles the TA information based on the RNTI to determine TAGs in a TAG cluster where the TAG to which the UE belongs is included and the corresponding TA values. Further, the UE determines a TA value corresponding to a TAG to which the UE belongs based on the TAG ID of the TAG, and uses TA value as a TA value between the UE and the gNB. As shown in <FIG>, the random access process between the UE and the gNB is performed in two steps, and the gNB multicasts the TA information.

As described above, with the electronic device <NUM> according to the present disclosure, the service region is divided into multiple TAG regions, each TAG corresponds to a TA value, and the TA value is configured and updated for each of the TAGs, so that the user equipments in the same TAG uses the same TA value, avoiding configuring and updating the TA value for each of user equipments, thereby reducing signaling overhead caused by updating TA values. Furthermore, the service region is divided into multiple resource regions, and each of the resource regions is configured with resources for transmitting preambles. Thus, user equipments in a same resource region transmit preambles using same resources, and user equipments in different resource regions transmit preambles using orthogonal resources, reducing the probability of collision of preambles, thereby increasing the probability of success with one access operation.

<FIG> is a block diagram showing a structure of a user equipment <NUM> in a wireless communication system according to an embodiment of the present disclosure. As shown in <FIG>, the user equipment <NUM> may include a communication unit <NUM>, a processing unit <NUM>, and a determination unit <NUM>.

All the units of the user equipment <NUM> may be included in processing circuitry. It should be noted that the user equipment <NUM> may include one processing circuitry or multiple processing circuitry. Further, the processing circuitry may include various discrete functional units to perform various functions and/or operations. It should be noted that the functional units may be physical entities or logical entities, and units with different titles may be implemented by the same physical entity.

According to an embodiment of the present disclosure, the user equipment <NUM> may be configured to receive TA information from a network side device via the communication unit <NUM>.

According to an embodiment of the present disclosure, the processing unit <NUM> may be configured to decode the received TA information to determine the content of the TA information.

According to an embodiment of the present disclosure, the determination unit <NUM> may be configured to determine a TA value corresponding to a TAG allocated for the user equipment <NUM> based on the TA information decoded by the processing unit <NUM>, and use the TA value corresponding to the TAG allocated for the user equipment <NUM> as a TA value between the user equipment <NUM> and the network side device.

A service region of the network side device is divided into multiple TAG regions, and one or more user equipments in each of the TAG regions are allocated to a same TAG The method for dividing TAG regions by the network side device is described in detail in the foregoing, and is not be repeated herein.

Therefore, the user equipment <NUM> according to the embodiments of the present disclosure may use the TA value corresponding to the TAG where the user equipment <NUM> is located as the TA value between the user equipment <NUM> and the network side device, avoiding configuring and updating the TA value for each of user equipments, thereby reducing signaling overhead caused by updating TA values.

According to an embodiment of the present disclosure, as shown in <FIG>, the user equipment <NUM> may further include a positioning unit <NUM> for positioning the user equipment <NUM>. The positioning unit <NUM> may be configured to position the user equipment <NUM> by various methods. For example, positioning may be performed with a GNSS (Global Navigation Satellite System), a location of the network side device with a highest RSRP (Reference Signal Receiving Power) may be regarded as a location of the user equipment <NUM>, and positioning may be performed with an OTDOA (Observed Time Difference of Arrival) method. The positioning method is not limited herein.

According to an embodiment of the present disclosure, the user equipment <NUM> may be configured to transmit location information of the user equipment <NUM> to the network side device via the communication unit <NUM>, and receive identification information of a TAG allocated to the user equipment <NUM> based on the location information of the user equipment <NUM> from the network side device via the communication unit <NUM>. For example, the user equipment <NUM> may transmit the location information to the network side device through MSG3 in a random access process with four steps, or transmit the location information to the network side device through MSG1 in a random access process with two steps.

According to an embodiment of the present disclosure, the identification information of the TAG may be the G-TAG ID described above. In an embodiment, the identification information of the TAG may be the L-TAG ID described above. That is, the user equipment <NUM> may be configured to pre-store location information of each of the TAG regions and a G-TAG ID of each of the TAG regions, and receive an L-TAG ID from the network side device.

According to an embodiment of the present disclosure, the processing unit <NUM> may be configured to decode the received TA information to obtain identification information of each of the TAGs in the service region of the network side device and a TA value corresponding to each of the TAGs. Further, the determining unit <NUM> may be configured to determine a TA value corresponding to a TAG allocated for the user equipment <NUM> based on the TAG allocated for the user equipment <NUM>. Taking UE1 shown in <FIG> as an example, the processing unit <NUM> obtains the TA information shown in <FIG>, and the determination unit <NUM> determines TA value <NUM> as a TA value between UE1 and the network side device based on the identification TAG ID1 of the TAG where the UE1 is located.

According to an embodiment of the present disclosure, the processing unit <NUM> may be configured to determine a RNTI corresponding to a TAG allocated for the user equipment <NUM> based on the ID of the TAG, and descramble the TA information based on the RNTI corresponding to the TAG allocated for the user equipment <NUM> to obtain identification information of the TAG allocated for the user equipment <NUM> and a TA value corresponding to the TAG allocated for the user equipment <NUM>. Further, the determination unit <NUM> may be configured to determine the TA value corresponding to the TAG allocated for the user equipment <NUM> based on the TAG allocated for the user equipment <NUM>. Since the TA information only includes one TA value, the determination unit <NUM> may directly determine the TA value as the TA value between the user equipment <NUM> and the network side device. The determination unit <NUM> may determine a TA value corresponding to the TAG allocated for the user equipment <NUM> as the TA value between the user equipment <NUM> and the network side device based on the ID of the TAG allocated for the user equipment <NUM>. Taking UE1 shown in <FIG> as an example, the processing unit <NUM> determines a RNTI corresponding to the TAG where UE1 is located based on the TAG ID1 of the TAG where UE1 is located, and descrambles TA information to obtain the TA information shown in <FIG>. The determination unit <NUM> determines TA value <NUM> as the TA value between UE1 and the network side device based on the identification TAG ID1 of the TAG where the UE1 is located.

According to an embodiment of the present disclosure, in a case that multiple TAG regions in the service region of the network side device are grouped into multiple TAG clusters, the processing unit <NUM> may be configured to determine a RNTI corresponding to a TAG cluster in which the TAG allocated for the user equipment <NUM> is included based on the ID of the TAG allocated for the user equipment <NUM>, and descramble the TA information based on the RNTI to obtain identification information of each of TAGs in the TAG cluster in which the TAG allocated for the user equipment <NUM> is included and a TA value corresponding to each of the TAGs. Further, the determination unit <NUM> may be configured to determine a TA value corresponding to the TAG allocated for the user equipment <NUM> based on the TAG allocated for the user equipment <NUM>. Taking UE1 shown in <FIG> as an example (assuming that TAG1 and TAG3 are included in a first TAG cluster, and TAG2 and TAG4 are included in a second TAG cluster), the processing unit <NUM> determines a RNTI corresponding to the first TAG cluster based on the TAG ID1 of the TAG to which UE1 belongs, and descrambles the TA information based on the RNTI to obtain identification Information of each of the TAGs in the first TAG cluster and a TA value corresponding to each of the TAGs as shown in <FIG>. The determination unit <NUM> may determine TA value <NUM> corresponding to the TAG ID1 based on the TAG ID1 of the TAG to which the UE1 belongs, and use the determined TA value <NUM> as the TA value between the UE1 and the network side device.

According to an embodiment of the present disclosure, as shown in <FIG>, the user equipment <NUM> may further include an update initiation unit <NUM>. The update initiation unit <NUM> is configured to determine whether the TAG region where the user equipment <NUM> is located changes based on the location information of the user equipment <NUM>, and cause the user equipment <NUM> to transmit updated location information of the user equipment <NUM> to the network side device in a case that the TAG region where the user equipment <NUM> is located changes. Further, the user equipment <NUM> may receive identification information of a TAG re-allocated for the user equipment <NUM> from the network side device, where the identification information of the TAG re-allocated for the user equipment <NUM> is determined based on the updated location information.

As mentioned above, the user equipment <NUM> may pre-store location information of each of the TAG regions and the G-TAG ID of each of the TAG regions, and the positioning unit <NUM> of the user equipment <NUM> may locate the user equipment <NUM> in real time. Thus, in a case that the user equipment <NUM> determines that the user equipment <NUM> moves out of a TAG region, the update initiation unit <NUM> may determine that it is required for the user equipment <NUM> re-to transmit location information. Then, the user equipment <NUM> may receive an updated L-TAG ID from the network-side device. In this way, the TAG allocated for the user equipment <NUM> is updated in time, thereby achieving better accuracy.

According to an embodiment of the present disclosure, the service region of the network side device may be divided into multiple resource regions, one or more user equipments in a same resource region are configured with same resources for transmitting preambles, and user equipments in different resource regions are configured with orthogonal resources for transmitting preambles. The method for dividing resource regions is described in detail in the foregoing, and is not repeated herein.

Further, as shown in <FIG>, the user equipment <NUM> may further include a storage unit <NUM> and a searching unit <NUM>.

According to an embodiment of the present disclosure, the user equipment <NUM> may be configured to receive service region information of the network side device from the network side device via the communication unit <NUM>. The service region information includes, for example, a location of a center point of the service region of the network side device and a size of a radius of the service region. According to an embodiment of the present disclosure, the user equipment <NUM> may receive the service region information broadcasted by the network side device.

According to an embodiment of the present disclosure, the storage unit <NUM> may store location information of each of the resource regions and resources configured for each of the resource regions for transmitting preambles. That is, the user equipment may pre-store a relative location of each of the resource regions with respect to the service region of the network side device and the resources for transmitting preambles corresponding to each of the resource regions.

According to an embodiment of the present disclosure, the searching unit <NUM> may be configured to determine an absolute location of each of the resource regions in space based on the service region information of the network side device and the pre-stored relative location of each of the resource regions with respect to the service region of the network side device. Further, the searching unit <NUM> may be configured to determine the resource region where the user equipment <NUM> is located based on the location information of the user equipment <NUM> and the absolute location of each of the resource regions in space, and then to search for resources corresponding to the resource region in a mapping relationship for transmitting preambles.

Further, the user equipment <NUM> may transmit a random access preamble by using the resource determined by the searching unit <NUM>.

As described above, according to the embodiments of the present disclosure, the service region of the network side device is divided into multiple resource regions. User equipments in the same resource region transmit preambles using same resources, and user equipments in different resource regions transmit preambles using orthogonal resources, reducing the probability of collision of preambles from different user equipments, thereby increasing the probability of success with one access operation.

The electronic device <NUM> according to the embodiments of the present disclosure may be used as the network side device, that is, the electronic device <NUM> may provide services for the user equipment <NUM>. Therefore, all the embodiments of the electronic device <NUM> described above are applicable herein.

Hereinafter, a wireless communication method performed by an electronic device <NUM> serving as a network side device in a wireless communication system according to an embodiment of the present disclosure is described in detail.

<FIG> is a flowchart of a wireless communication method performed by an electronic device <NUM> serving as a network side device in a wireless communication system according to an embodiment of the present disclosure.

As shown in <FIG>, in step S2110, a service region of an electronic device <NUM> is divided into multiple TAG regions based on the location information, and one or more user equipments in each of the TAG regions are allocated to a same TAG.

In step S2120, TA information is transmitted to the user equipment. The TA information includes a TA value corresponding to a TAG allocated for the user equipment, so that the user equipment uses the TA value corresponding to the TAG allocated for the user equipment as a TA value between the user equipment and the electronic device <NUM>.

In an embodiment, the wireless communication method includes: allocating a TAG for the user equipment based on location information of the user equipment, and transmitting identification information of the TAG allocated for the user equipment to the user equipment.

In an embodiment, the TA information is transmitted by broadcasting the TA information, and the TA information includes identification information of TAGs in the service region of the electronic device <NUM> and TA values corresponding to the TAGs.

In an embodiment, the TA information is transmitted by multicasting the TA information, and the TA information includes identification information of the TAG allocated for the user equipment and a TA value corresponding to the TAG allocated for the user equipment.

In an embodiment, the wireless communication method includes: configuring different RNTIs for each of the TAGs in the service region of the electronic equipment; and scrambling the TA information using a RNTI corresponding to the TAG allocated for the user equipment.

In an embodiment, the wireless communication method further includes: grouping the multiple TAG regions in the service region of the electronic device <NUM> into multiple TAG clusters. The TA information is transmitted by multicasting the TA information. The TA information includes identification information of TAGs in a TAG cluster in which the TAG allocated for the user equipment is included and TA values corresponding to the TAGs.

In an embodiment, the wireless communication method further includes: configuring an unique RNTI for each of the TAG clusters; and scrambling the TA information using a RNTI corresponding to the TAG cluster in which the TAG allocated for the user equipment is included.

In an embodiment, the wireless communication method further includes: determining a TA value corresponding to the TAG according to a TA value between each user equipment in the TAG region and the electronic equipment <NUM>.

In an embodiment, the wireless communication method further includes: dividing the service region of the electronic device <NUM> into multiple resource regions based on location information; configuring, for each of the resource regions, resources for transmitting preambles, where user equipments in a same resource region transmit preambles using same resources and user equipments in different resource regions transmit preambles using orthogonal resources; and transmitting service region information of the electronic device <NUM> to the user equipment, where the user equipment determines a resource region to which the user equipment belongs based on location information of the user equipment and the service region information of the electronic device <NUM>, and determines resources for transmitting a preamble based on the resource region to which the user equipment belongs to transmit the preamble.

In an embodiment, the service region information is transmitted by broadcasting the service region information of the electronic device <NUM>.

According to an embodiment of the present disclosure, the subject performing the method may be the electronic device <NUM> according to the embodiments of the present disclosure, so all the above embodiments of the electronic device <NUM> are applicable herein.

Hereinafter, a wireless communication method performed by a user equipment <NUM> in a wireless communication system according to an embodiment of the present disclosure is described in detail.

<FIG> is a flowchart of a wireless communication method performed by a user equipment <NUM> in a wireless communication system according to an embodiment of the present disclosure.

As shown in <FIG>, in step S2210, TA information is received from a network side device.

In step S2220, a TA value corresponding to a TAG allocated for the user equipment <NUM> is determined based on the TA information.

In step S2230, the TA value corresponding to the TAG allocated for the user equipment <NUM> is used as a TA value between the user equipment <NUM> and the network side device.

A service region of the network side device is divided into multiple TAG regions based on the location information, and one or more user equipments in each of the TAG regions are allocated to a same TAG.

In an embodiment, the wireless communication method further includes: transmitting location information of the user equipment <NUM> to the network side device; and receiving, from the network side device, identification information of the TAG allocated for the user equipment <NUM>.

In an embodiment, the TA information includes: identification information of TAGs in the service region of the electronic device and TA values corresponding to the TAGs. The wireless communication method further includes: determining the TA value corresponding to the TAG allocated for the user equipment <NUM> based on the TAG allocated for the user equipment <NUM>.

In an embodiment, the TA information includes: identification information of the TAG allocated for the user equipment <NUM> and a TA value corresponding to the TAG allocated for the user equipment <NUM>. The wireless communication method further includes: descrambling the TA information using a RNTI corresponding to the TAG allocated for the user equipment <NUM>.

In an embodiment, the multiple TAG regions in the service region of the network side device are grouped into multiple TAG clusters. The TA information includes: identification information of TAGs in the TAG cluster in which the TAG allocated for the user equipment is included and TA values corresponding to the TAGs. The wireless communication method further includes: descrambling the TA information using a RNTI corresponding to a TAG cluster in which the TAG allocated for the user equipment <NUM> is included.

In an embodiment, the wireless communication method further includes: transmitting updated location information of the user equipment <NUM> to the network side device in a case that it is determined based on the location information of the user equipment <NUM> that a TAG region in which the user equipment <NUM> is located changes; and receiving, from the network side device, identification information of a TAG allocated for the user equipment <NUM>.

In an embodiment, the wireless communication method further includes: receiving service region information of the network side device from the network side device; determining a resource region to which the user equipment <NUM> belongs based on location information of the user equipment <NUM> and the service region information of the network side device; and determining resources for transmitting a preamble based on the resource region to which the user equipment <NUM> belongs to transmit the preamble. The service region of the network side device is divided into multiple resource regions based on location information, one or more user equipments in a same resource region are configured with same resources for transmitting preambles, and user equipments in different resource regions are configured with orthogonal resources for transmitting preambles.

According to an embodiment of the present disclosure, the subject performing the method may be the user equipment <NUM> according to the embodiments of the present disclosure, so all the embodiments of the user equipment <NUM> are applicable herein.

The technology according to the present disclosure is applicable to various products.

For example, the network side device may be implemented by any types of TRP. The TRP may have transmitting and receiving functions, for example, the TRP may receive information from a user equipment and a base station equipment, and may transmit information to the user equipment and the base station equipment. In a typical example, the TRP may provide services to a user equipment and is controlled by a base station equipment. Further, the TRP may have a structure similar to the structure of the base station equipment described below, or may only have a structure related to the transmission and reception of information in the base station equipment.

The network side device may be implemented as various base stations, for example, a macro eNB and a small eNB, and may be implemented as any type of gNB. The small eNB may be an eNB, such as a pico eNB, a micro eNB, and a home (femto) eNB, which covers a cell smaller than a macro cell. Alternatively, the base station may be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS). The base station may include a body (which is also referred to as a base station device) configured to control wireless communications; and one or more remote radio heads (RRHs) arranged in a different position from the body.

The user equipment may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/dongle type mobile router, and a digital camera device), or an in-vehicle terminal (such as a car navigation device). The user equipment may also be implemented as a terminal (which is also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication. Furthermore, the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) mounted on each of the terminals.

<FIG> is a block diagram showing a first example of a schematic configuration of an eNB to which the technology of the present disclosure may be applied. An eNB <NUM> includes one or more antennas <NUM> and a base station device <NUM>. The base station device <NUM> and each of the antennas <NUM> may be connected to each other via a RF cable.

Each of the antennas <NUM> includes a single or multiple antenna elements (such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna), and is used for transmitting and receiving wireless signals by the base station device <NUM>. As shown in <FIG>, the eNB <NUM> may include multiple antennas <NUM>. For example, the multiple antennas <NUM> may be compatible with multiple frequency bands used by the eNB <NUM>. Although <FIG> showns the example in which the eNB <NUM> includes the multiple antennas <NUM>, the eNB <NUM> may also include a single antenna <NUM>.

The base station device <NUM> includes a controller <NUM>, a memory <NUM>, a network interface <NUM>, and a wireless communication interface <NUM>.

The controller <NUM> may be, for example, a CPU or a DSP, and operate various functions of a higher layer of the base station device <NUM>. For example, the controller <NUM> generates a data packet from data in signals processed by the wireless communication interface <NUM>, and transfers the generated packet via the network interface <NUM>. The controller <NUM> may bundle data from multiple base band processors to generate a bundled packet, and transfer the generated bundled packet. The controller <NUM> may have logical functions of performing control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. The control may be performed in corporation with an eNB or a core network node in the vicinity. The memory <NUM> includes a RAM and a ROM, and stores a program which is executed by the controller <NUM>, and various types of control data (such as a terminal list, transmission power data, and scheduling data).

The network interface <NUM> is a communication interface for connecting the base station device <NUM> to a core network <NUM>. The controller <NUM> may communicate with a core network node or another eNB via the network interface <NUM>. In this case, the eNB <NUM> and the core network node or the other eNB may be connected to each other via a logical interface (such as an S1 interface and an X2 interface). The network interface <NUM> may also be a wired communication interface or a wireless communication interface for radio backhaul. If the network interface <NUM> is a wireless communication interface, the network interface <NUM> may use a higher frequency band for wireless communication than a frequency band used by the wireless communication interface <NUM>.

The wireless communication interface <NUM> supports any cellular communication scheme (such as Long Term Evolution (LTE) and LTE-Advanced), and provides wireless connection to a terminal positioned in a cell of the eNB <NUM> via the antenna <NUM>. The wireless communication interface <NUM> may typically include, for example, a baseband (BB) processor <NUM> and an RF circuit <NUM>. The BB processor <NUM> may perform, for example, encoding/decoding, modulating/demodulating, and multiplexing/demultiplexing, and performs various types of signal processing of layers (such as L1, medium access control (MAC), radio link control (RLC), and a packet data convergence protocol (PDCP)). The BB processor <NUM> may have a part or all of the above-described logical functions instead of the controller <NUM>. The BB processor <NUM> may be a memory which stores a communication control program, or a module that includes a processor and a related circuit configured to execute the program. Updating the programs may change functions of the BB processor <NUM>. The module may be a card or a blade which is inserted into a slot of the base station device <NUM>. Alternatively, the module may also be a chip that is mounted on the card or the blade. In addition, the RF circuit <NUM> may include, for example, a frequency mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna <NUM>.

As shown in <FIG>, the wireless communication interface <NUM> may include multiple BB processors <NUM>. For example, the multiple BB processors <NUM> may be compatible with multiple frequency bands used by the eNB <NUM>. As shown in <FIG>, the wireless communication interface <NUM> may include multiple RF circuits <NUM>. For example, the multiple RF circuits <NUM> may be compatible with multiple antenna elements. Although <FIG> shows the example in which the wireless communication interface <NUM> includes the multiple BB processors <NUM> and the multiple RF circuits <NUM>, the wireless communication interface <NUM> may also include a single BB processor <NUM> or a single RF circuit <NUM>.

<FIG> is a block diagram showing a second example of a schematic configuration of an eNB to which the technology according to the present disclosure may be applied. An eNB <NUM> includes one or more antennas <NUM>, a base station device <NUM>, and an RRH <NUM>. Each of the antennas <NUM> and the RRH <NUM> may be connected to each other via an RF cable. The base station device <NUM> and the RRH <NUM> may be connected to each other via a high speed line such as an optical fiber cable.

Each of the antennas <NUM> includes a single or multiple antenna elements (such as multiple antenna elements included in an MIMO antenna), and is used for the RRH <NUM> to transmit and receive wireless signals. As shown in <FIG>, the eNB <NUM> may include multiple antennas <NUM>. For example, the multiple antennas <NUM> may be compatible with multiple frequency bands used by the eNB <NUM>. Although <FIG> shows the example in which the eNB <NUM> includes the multiple antennas <NUM>, the eNB <NUM> may also include a single antenna <NUM>.

The base station device <NUM> includes a controller <NUM>, a memory <NUM>, a network interface <NUM>, a wireless communication interface <NUM>, and a connection interface <NUM>. The controller <NUM>, the memory <NUM>, and the network interface <NUM> are the same as the controller <NUM>, the memory <NUM>, and the network interface <NUM> described with reference to <FIG>.

The wireless communication interface <NUM> supports any cellular communication scheme (such as LTE and LTE-Advanced), and provides wireless communication to a terminal positioned in a sector corresponding to the RRH <NUM> via the RRH <NUM> and the antenna <NUM>. The wireless communication interface <NUM> may typically include, for example, a BB processor <NUM>. Other than connecting to an RF circuit <NUM> of the RRH <NUM> via the connection interface <NUM>, the BB processor <NUM> is the same as the BB processor <NUM> described with reference to <FIG>. As shown in <FIG>, the wireless communication interface <NUM> may include multiple BB processors <NUM>. For example, the multiple BB processors <NUM> may be compatible with multiple frequency bands used by the eNB <NUM>. Although <FIG> shows the example in which the wireless communication interface <NUM> includes the multiple BB processors <NUM>, the wireless communication interface <NUM> may also include a single BB processor <NUM>.

The connection interface <NUM> is an interface for connecting the base station device <NUM> (the wireless communication interface <NUM>) to the RRH <NUM>. The connection interface <NUM> may be a communication module for a communication of the above high-speed line, which is used for connecting the base station device <NUM> (the wireless communication interface <NUM>) the RRH <NUM>.

The RRH <NUM> includes a connection interface <NUM> and a wireless communication interface <NUM>.

The connection interface <NUM> is an interface for connecting the RRH <NUM> (the wireless communication interface <NUM>) to the base station device <NUM>. The connection interface <NUM> may also be a communication module for the communication in the above high speed line.

The wireless communication interface <NUM> transmits and receives wireless signals via the antenna <NUM>. The wireless communication interface <NUM> may typically include, for example, the RF circuit <NUM>. The RF circuit <NUM> may include, for example, a frequency mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna <NUM>. As shown in <FIG>, the wireless communication interface <NUM> may include multiple RF circuits <NUM>. For example, the multiple RF circuits <NUM> may support multiple antenna elements. Although <FIG> shows the example in which the wireless communication interface <NUM> includes the multiple RF circuits <NUM>, the wireless communication interface <NUM> may also include a single RF circuit <NUM>.

In the eNB <NUM> shown in <FIG> and the eNB <NUM> shown in <FIG>, the division unit <NUM>, the determination unit <NUM>, the generation unit <NUM>, the division unit <NUM>, the configuration unit <NUM>, and the generation unit <NUM> shown in <FIG> may be implemented by the controller <NUM> and/or controller <NUM>. At least part of the functions may also be implemented by the controller <NUM> and the controller <NUM>. For example, the controller <NUM> and/or the controller <NUM> may perform the functions of dividing TAGs and TAG regions, determining TA values of TAGs, generating TA information, dividing resource regions, configuring resources for transmitting preambles for each of the resource regions and generating service region information by executing corresponding instructions stored in the memory.

<FIG> is a block diagram showing an example of a schematic configuration of a smartphone <NUM> to which the technology according to the present disclosure may be applied. The smartphone <NUM> includes a processor <NUM>, a memory <NUM>, a storage device <NUM>, an external connection interface <NUM>, a camera <NUM>, a sensor <NUM>, a microphone <NUM>, an input device <NUM>, a display device <NUM>, a speaker <NUM>, a wireless communication interface <NUM>, one or more antenna switches <NUM>, one or more antennas <NUM>, a bus <NUM>, a battery <NUM>, and an auxiliary controller <NUM>.

The processor <NUM> may be, for example, a CPU or a system on a chip (SoC), and controls functions of an application layer and another layer of the smartphone <NUM>. The memory <NUM> includes a RAM and a ROM, and stores programs executed by the processor <NUM> and data. The storage device <NUM> may include a storage medium, such as a semiconductor memory and a hard disk. The external connection interface <NUM> is an interface for connecting an external device (such as a memory card and a universal serial bus (USB) device) to the smart phone <NUM>.

The camera <NUM> includes an image sensor (such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS)) and generates a captured image. The sensor <NUM> may include a set of sensors, such as a measurement sensor, a gyroscope sensor, a geomagnetic sensor and an acceleration sensor. The microphone <NUM> converts sound inputted into the smart phone <NUM> into an audio signal. The input device <NUM> includes, for example, a touch sensor configured to detect touch onto a screen of the display device <NUM>, a keypad, a keyboard, a button, or a switch, and receives an operation or information inputted from a user. The display device <NUM> includes a screen (such as a liquid crystal display (LCD) and an organic light-emitting diode (OLED) display), and displays an output image of the smartphone <NUM>. The loudspeaker <NUM> converts the audio signal outputted from the smart phone <NUM> into sound.

The wireless communication interface <NUM> supports any cellular communication scheme (such as LTE and LTE-advanced), and performs wireless communication. The wireless communication interface <NUM> may generally include, for example, a BB processor <NUM> and an RF circuit <NUM>. The BB processor <NUM> may perform, for example, encoding/decoding, modulating/demodulating, and multiplexing/de-multiplexing, and perform various types of signal processing for wireless communication. In addition, the RF circuit <NUM> may include, for example, a frequency mixer, a filter, and an amplifier, and transmits and receives wireless signals via an antenna <NUM>. It should be noted that although <FIG> shows a case that one RF link is connected to one antenna, which is only illustrative, and a case that one RF link is connected to multiple antennas via multiple phase shifters may also be included. The wireless communication interface <NUM> may be a one chip module having the BB processor <NUM> and the RF circuit <NUM> integrated thereon. As illustrated in <FIG>, the wireless communication interface <NUM> may include the multiple BB processors <NUM> and the multiple RF circuits <NUM>. Although <FIG> shows the example in which the wireless communication interface <NUM> includes the multiple BB processors <NUM> and the multiple RF circuits <NUM>, the wireless communication interface <NUM> may also include a single BB processor <NUM> or a single RF circuit <NUM>.

Furthermore, in addition to a cellular communication scheme, the wireless communication interface <NUM> may support another type of wireless communication scheme, such as a short-distance wireless communication scheme, a near field communication scheme, and a wireless local area network (LAN) scheme. In this case, the wireless communication interface <NUM> may include the BB processor <NUM> and the RF circuit <NUM> for each of the wireless communication schemes.

Each of the antenna switches <NUM> switches connection destinations of the antennas <NUM> among multiple circuits (such as circuits for different wireless communication schemes) included in the wireless communication interface <NUM>.

Each of the antennas <NUM> includes a single or multiple antenna elements (such as multiple antenna elements included in an MIMO antenna), and is used for the wireless communication interface <NUM> to transmit and receive wireless signals. As shown in <FIG>, the smartphone <NUM> may include the multiple antennas <NUM>. Although <FIG> shows the example in which the smartphone <NUM> includes the multiple antennas <NUM>, the smartphone <NUM> may also include a single antenna <NUM>.

Furthermore, the smartphone <NUM> may include the antenna <NUM> for each wireless communication scheme. In this case, the antenna switch <NUM> may be omitted from the configuration of the smart phone <NUM>.

The bus <NUM> connects the processor <NUM>, the memory <NUM>, the storage device <NUM>, the external connection interface <NUM>, the camera <NUM>, the sensor <NUM>, the microphone <NUM>, the input device <NUM>, the display device <NUM>, the loudspeaker <NUM>, the wireless communication interface <NUM> and the auxiliary controller <NUM> with each other. The battery <NUM> supplies power for blocks in the smart phone <NUM> shown in <FIG> via a feeder which is indicated partially as a dashed line in <FIG>. The auxiliary controller <NUM>, for example, controls a minimum necessary function for operating the smart phone <NUM> in a sleeping mode.

In the smart phone <NUM> shown in <FIG>, the processing unit <NUM>, the determination unit <NUM>, the positioning unit <NUM>, the update initiation unit <NUM>, the storage unit <NUM>, and the searching unit <NUM> shown in <FIG> may be implemented by the processor <NUM> or the auxiliary controller <NUM>. At least a part of the functions may be implemented by the processor <NUM> or the auxiliary controller <NUM>. For example, the processor <NUM> or the auxiliary controller <NUM> may perform the functions of decoding TA information, determining a TA value with the network side device, determining a location, determining whether it is required to update a location, storing a mapping relationship between resource regions and the resources, searching the mapping relationship to determine resources for transmitting preambles by executing instructions stored in the memory <NUM> or the storage device <NUM>.

<FIG> is a block diagram showing an example of a schematic configuration of a car navigation device <NUM> to which the technology according to the present disclosure may be applied. The car navigation device <NUM> includes a processor <NUM>, a memory <NUM>, a global positioning system (GPS) module <NUM>, a sensor <NUM>, a data interface <NUM>, a content player <NUM>, a storage medium interface <NUM>, an input device <NUM>, a display device <NUM>, a speaker <NUM>, a wireless communication interface <NUM>, one or more antenna switches <NUM>, one or more antennas <NUM>, and a battery <NUM>.

The processor <NUM> may be, for example, a CPU or a SoC, and controls the navigation function and additional functions of the car navigation device <NUM>. The memory <NUM> includes a RAM and a ROM, and stores programs executed by the processor <NUM> and data.

The GPS module <NUM> measures a position (such as a latitude, a longitude, and a height) of the car navigation device <NUM> based on a GPS signal received from a GPS satellite. The sensor <NUM> may include a group of sensors, such as, a gyroscope sensor, a geomagnetic sensor, and an air pressure sensor. The data interface <NUM> is connected to, for example, an in-vehicle network <NUM> via a terminal which is not shown, and acquires data generated by the vehicle (such as vehicle speed data).

The content player <NUM> reproduces contents stored in a storage medium (such as a CD and a DVD), where the storage medium is inserted into the storage medium interface <NUM>. The input device <NUM> includes, for example, a touch sensor configured to detect touch on a screen of the display device <NUM>, a button, or a switch, and receives an operation or information inputted from a user. The display device <NUM> includes a screen, for example, an LCD display or an OLED display, and displays an image with a navigation function or the reproduced content. The loudspeaker <NUM> outputs a sound with a navigation function or the reproduced content.

The wireless communication interface <NUM> supports any cellular communication scheme (such as, LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface <NUM> may usually include, for example, a BB processor <NUM> and an RF circuit <NUM>. The BB processor <NUM> may perform, for example, encoding/decoding, modulating/demodulating, and multiplexing/de-multiplexing, and performs various types of signal processing for wireless communication. In addition, the RF circuit <NUM> may include, for example, a frequency mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna <NUM>. The wireless communication interface <NUM> may also be a chip module on which the BB processor <NUM> and the RF circuit <NUM> are integrated. As shown in <FIG>, the wireless communication interface <NUM> may include multiple BB processors <NUM> and multiple RF circuits <NUM>. Although <FIG> shows an example in which the wireless communication interface <NUM> includes multiple BB processors <NUM> and multiple RF circuits <NUM>, the wireless communication interface <NUM> may include a single BB processor <NUM> or a single RF circuit <NUM>.

Furthermore, in addition to a cellular communication scheme, the wireless communication interface <NUM> may support another type of wireless communication scheme, such as a short-distance wireless communication scheme, a near field communication scheme, and a wireless LAN scheme. In this case, for each of the wireless communication schemes, the wireless communication interface <NUM> may include a BB processor <NUM> and an RF circuit <NUM>.

Each of the antennas <NUM> includes one or more antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the wireless communication interface <NUM> to transmit and receive wireless signals. As shown in <FIG>, the car navigation device <NUM> may include multiple antennas <NUM>. Although <FIG> shows the example in which the car navigation device <NUM> includes the multiple antennas <NUM>, the car navigation device <NUM> may also include a single antenna <NUM>.

Furthermore, the car navigation device <NUM> may include an antenna <NUM> for each of the wireless communication schemes. In this case, the antenna switch <NUM> may be omitted from the configuration of the car navigation device <NUM>.

The battery <NUM> supplies power to each of the blocks of the car navigation device <NUM> shown in <FIG> via feeders which are partially shown with dashed lines in <FIG>. The battery <NUM> accumulates power supplied from the vehicle.

In the car navigation device <NUM> shown in <FIG>, the processing unit <NUM>, the determination unit <NUM>, the positioning unit <NUM>, the update initiation unit <NUM>, the storage unit <NUM>, and the searching unit <NUM> shown in <FIG> may be implemented by the processor <NUM>. At least a part of the functions may be implemented by the processor <NUM>. For example, the processor <NUM> may perform the functions of decoding TA information, determining a TA value with the network side device, determining a location, determining whether it is required to update a location, storing a mapping relationship between resource regions and the resources, searching the mapping relationship to determine resources for transmitting preambles by executing instructions stored in the memory <NUM>.

The technology according to the present disclosure may also be implemented as an in-vehicle system (or a vehicle) <NUM> including one or more blocks of the car navigation device <NUM>, the in-vehicle network <NUM> and a vehicle module <NUM>. The vehicle module <NUM> generates vehicle data (such as vehicle speed, engine speed, and fault information), and outputs the generated data to the in-vehicle network <NUM>.

The preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings. Apparently, the present disclosure is not limited to the above embodiments. Those skilled in the art may obtain various changes and modifications within the scope of the appended claims, and it should be understood that these changes and modifications are fall within the technical scope of the present disclosure.

For example, the units shown in dashed boxes in the functional block diagrams shown in the drawings indicate that the functional units are optional in the corresponding device, and the various optional functional units may be combined in an appropriate manner to perform required functions.

For example, the functions included in one unit according to the above embodiments may be realized by separate devices. Alternatively, the functions implemented by multiple units in the above embodiments may be implemented by separate devices, respectively. In addition, one of the above functions may be implemented by multiple units. It should be understood that the above configurations are included in the technical scope of the present disclosure.

In this specification, the steps described in the flowchart may be performed in the chronological order described herein, and may be performed in parallel or independently rather than necessarily in the chronological order. In addition, the chronological order in which the steps are performed may be changed appropriately.

Claim 1:
An electronic device (<NUM>) on a network side, comprising processing circuitry (<NUM>) configured to:
divide a service region of the electronic device into a plurality of timing advance group TAG regions and allocate, based on location information, one or more user equipments (<NUM>) in each of the TAG regions to a same TAG;
transmit, to the user equipment, identification information of the TAG allocated to the user equipment; and
transmit timing advance TA information to the user equipment, wherein the TA information comprises identification information of the TAG allocated for the user equipment and a TA value corresponding to the TAG allocated for the user equipment to enable the user equipment to use the TA value corresponding to the TAG allocated for the user equipment as a TA value between the user equipment and the electronic device; and
wherein the electronic device (<NUM>) is characterised by the processing circuitry being further configured to:
configure different radio network temporary identifiers RNTIs for each of the TAGs in the service region of the electronic device; and
scramble the TA information using a RNTI corresponding to the TAG allocated for the user equipment.