Electronic device and method for wireless communication, and computer readable storage medium

Abstract

An electronic device, a method, and a computer readable storage medium for wireless communication are disclosed. An electronic device of a node end in wireless communication comprises a processing circuit, the processing circuit is configured to: determine a first sub-region set according to a sub-region to which a moving position of a user equipment served by a node belongs and an influence range of information of the user equipment, the sub-region being obtained by dividing a node coverage range; and determining a first node set according to the node to which each sub-region in the first sub-region set belongs, so as to send the information to each node in the first node set, the first node set representing a node set in which the information is to be broadcast or multicast.

Description

[0001] This application is a divisional application of the application with application number 202210387385.6, application date July 21, 2017, and invention name “Electronic device, method and computer-readable storage medium for wireless communication”.

[0002] The application with application number 202210387385.6 is a divisional application of the application with application number 201780033518.7, application date July 21, 2017, and invention name “Electronic device and method in wireless communication”.

[0003] This application claims the priority of Chinese patent application filed with the China Patent Office on August 10, 2016, with application number 201610653477.9 and invention name “Electronic device and method in wireless communication”, the entire contents of which are incorporated by reference into this application. Technical Field

[0004] The present disclosure relates to the field of wireless communications, and more particularly to the field of vehicle-to-everything (V2X) communications, and more particularly to a solution for rapidly determining a downlink multicast / broadcast area in V2X communications. Background Art

[0005] In V2X communication based on the Uu interface, the data information (hereinafter referred to as V2X message) generated by the transmitting vehicle (Transmission Vehicular UE, T-VUE) is sent to its service base station via the uplink channel. After receiving the message, the service base station multicasts / broadcasts the message to the influence area within a certain distance around the T-VUE via the downlink channel. However, since the receiving vehicles (Receiving Vehicular UEs, R-VUEs) within a certain range around the T-VUE may be located in different cells, in order to ensure that all R-VUEs can correctly receive the message, it may be necessary to multicast / broadcast the message in multiple cells.

[0006] In the existing related technologies, the base station usually maintains the corresponding R-VUEs group and determines the multicast / broadcast area according to the location of the R-VUEs. However, this solution requires the base station to dynamically update the location information of all VUEs, so the signaling overhead is large, and when the location information is not available, the multicast / broadcast area at this time cannot be determined. Therefore, a solution that can quickly and efficiently propagate V2X messages is desired, which can achieve one or more of the following advantages: reduced signaling overhead, shortened latency, and effective delivery of V2X messages. Summary of the invention

[0007] A brief overview of the disclosure is given below in order to provide a basic understanding of certain aspects of the disclosure. However, it should be understood that this overview is not an exhaustive overview of the disclosure. It is not intended to identify the key or important parts of the disclosure, nor is it intended to limit the scope of the disclosure. Its purpose is simply to give certain concepts of the disclosure in a simplified form as a prelude to a more detailed description given later.

[0008] In view of the above problems, an object of at least one aspect of the present disclosure is to provide an electronic device and method for a user device and a base station in wireless communications, which can quickly determine a set of base stations on which data information from a user device is to be broadcast or multicast based on downlink channel quality measurement results of surrounding base stations and / or a prediction of the geographic location of the user device.

[0009] According to one aspect of the present disclosure, an electronic device at the user equipment end in wireless communication is provided, the electronic device comprising a processing circuit, the processing circuit being configured to: measure the downlink channel quality of a serving base station and a neighboring base station of the user equipment; and determine a first base station set from the serving base station and the neighboring base stations based on the measured downlink channel quality, wherein the first base station set represents a set of base stations for broadcasting or multicasting data information.

[0010] According to a preferred embodiment of the present disclosure, the wireless communication includes vehicle communication.

[0011] According to another preferred embodiment of the present disclosure, the processing circuit is further configured to determine the first base station set based on the change trend and amplitude of the measured downlink channel quality.

[0012] According to another preferred embodiment of the present disclosure, the processing circuit is further configured to determine the first base station set based on the difference relationship between the first predetermined number of downlink channel qualities with increasing change trends and top amplitude rankings and the influence range of the data information.

[0013] According to another preferred embodiment of the present disclosure, the processing circuit is further configured to determine the first base station set based on distances between base stations corresponding to a first predetermined number of downlink channel qualities.

[0014] According to another preferred embodiment of the present disclosure, the impact range of the data information is related to at least one of the category of the data information and the moving speed of the user equipment.

[0015] According to another preferred embodiment of the present disclosure, the processing circuit is further configured to determine a second base station set from the serving base station and the neighboring base stations based on the measured downlink channel quality, the second base station set representing a base station set for pre-caching data information.

[0016] According to another preferred embodiment of the present disclosure, the processing circuit is further configured to determine a second predetermined number of base stations with increasing downlink channel quality change trends and ranked high in magnitude as the second base station set.

[0017] According to another preferred embodiment of the present disclosure, the processing circuit is further configured to generate a report including the data information and the first base station set to be sent to the serving base station.

[0018] According to another preferred embodiment of the present disclosure, the electronic device also works as a user equipment, and the electronic device further includes: a first interface configured to support cellular communication.

[0019] According to another preferred embodiment of the present disclosure, the electronic device sends a priority indication indicating the priority of the data information to the serving base station via the first interface.

[0020] According to another preferred embodiment of the present disclosure, the electronic device further includes: a second interface configured to support device-to-device communication.

[0021] According to another preferred embodiment of the present disclosure, the electronic device receives a group identifier sent by the serving base station based on the priority indication via a first interface, and broadcasts the group identifier via a second interface.

[0022] According to another preferred embodiment of the present disclosure, the downlink channel quality includes one or more of a channel quality indicator, a reference signal received power, a reference signal received quality, a received signal strength indicator, and a reference signal signal to interference and noise ratio.

[0023] According to another aspect of the present disclosure, an electronic device at the base station end in wireless communication is also provided, the electronic device comprising a processing circuit, the processing circuit being configured to: determine data information and a first base station set based on a report from a user device served by the base station, so as to send the data information to each base station in the first base station set, wherein the first base station set is determined by the user equipment based on the measured downlink channel quality of the base station and the neighboring base stations, and represents a base station set for broadcasting or multicasting the data information.

[0024] According to another aspect of the present disclosure, an electronic device at the base station end in wireless communication is also provided, the electronic device including a processing circuit, the processing circuit being configured to: determine a first sub-area set according to the sub-area to which the mobile position of the user equipment served by the base station belongs and the influence range of the data information from the user equipment, wherein the sub-area is obtained by dividing the cell coverage area; and determine a first base station set according to the cell to which each sub-area in the first sub-area set belongs, so as to send the data information to each base station in the first base station set, wherein the first base station set represents a set of base stations for broadcasting or multicasting the data information.

[0025] According to another aspect of the present disclosure, an electronic device at the user equipment end in wireless communication is also provided, the electronic device including a processing circuit, the processing circuit being configured to: generate a report including at least the influence range of the data information of the user equipment, to be sent to a service base station of the user equipment, so that the service base station determines a first sub-area set according to the sub-area to which the mobile position of the user equipment belongs and the influence range, and determines a first base station set based on the first sub-area set, so as to send the data information to each base station in the first base station set, wherein the sub-area is obtained by dividing the cell coverage range, and the first base station set represents a set of base stations for broadcasting or multicasting the data information.

[0026] According to another aspect of the present disclosure, a method for a user equipment side in wireless communication is also provided, the method comprising: measuring the downlink channel quality of a serving base station and a neighboring base station of the user equipment; and determining a first base station set from the serving base station and the neighboring base stations based on the measured downlink channel quality, wherein the first base station set represents a set of base stations for broadcasting or multicasting data information.

[0027] According to another aspect of the present disclosure, a method for a base station in wireless communication is also provided, the method comprising: determining data information and a first base station set based on a report from a user equipment served by the base station, so as to send the data information to each base station in the first base station set, wherein the first base station set is determined by the user equipment based on the measured downlink channel quality of the base station and the neighboring base stations, and represents a base station set for broadcasting or multicasting the data information.

[0028] According to another aspect of the present disclosure, a method for a base station in wireless communication is also provided, the method comprising: determining a first sub-area set according to the sub-area to which the mobile position of a user equipment served by the base station belongs and the influence range of data information from the user equipment, wherein the sub-area is obtained by dividing the cell coverage area; and determining a first base station set according to the cell to which each sub-area in the first sub-area set belongs, so as to send data information to each base station in the first base station set, wherein the first base station set represents a set of base stations for broadcasting or multicasting data information.

[0029] According to another aspect of the present disclosure, a method for a user equipment end in wireless communication is also provided, the method comprising: generating a report including at least the influence range of data information of the user equipment to send to a service base station of the user equipment, so that the service base station determines a first sub-area set according to the sub-area and influence range to which the mobile position of the user equipment belongs, and determines a first base station set based on the first sub-area set, so as to send the data information to each base station in the first base station set, wherein the sub-area is obtained by dividing the cell coverage range, and the first base station set represents a set of base stations for broadcasting or multicasting the data information.

[0030] According to other aspects of the present disclosure, a computer program code and a computer program product for implementing the method according to the present disclosure, as well as a computer-readable storage medium having the computer program code for implementing the method according to the present disclosure recorded thereon, are also provided.

[0031] According to an embodiment of the present disclosure, a set of base stations for broadcasting or multicasting data information from a user device is quickly determined based on downlink channel quality measurement results and / or geographic location predictions of surrounding base stations. Compared with the prior art, signaling interactions can be reduced and data transmission performance in scenarios where user devices move rapidly (including but not limited to V2X communications) can be improved.

[0032] Other aspects of the embodiments of the present disclosure are given in the following description, wherein the detailed description is used to fully disclose the preferred embodiments of the embodiments of the present disclosure without imposing limitations thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present disclosure may be better understood by referring to the detailed description given below in conjunction with the accompanying drawings, wherein the same or similar reference numerals are used throughout the drawings to represent the same or similar components. The accompanying drawings, together with the following detailed description, are included in and form a part of the present specification to further illustrate the preferred embodiments of the present disclosure and to explain the principles and advantages of the present disclosure. Among them:

[0034] Figure 1 is a schematic diagram showing changes in downlink multicast / broadcast areas in different scenarios;

[0035] Figure 2 is a block diagram showing an example of a functional configuration of an electronic device at a user equipment side in wireless communication according to a first embodiment of the present disclosure;

[0036] Figure 3 is a schematic diagram showing a first exemplary manner of determining a first base station set according to an embodiment of the present disclosure;

[0037] Figure 4is a schematic diagram showing a second exemplary manner of determining a first base station set according to an embodiment of the present disclosure;

[0038] Figure 5 is a schematic diagram showing an example of a second base station set according to an embodiment of the present disclosure;

[0039] Figure 6 is a block diagram showing a functional configuration example of an electronic device on the base station side in wireless communication according to the first embodiment of the present disclosure;

[0040] Fig. 7A is an interactive flow chart showing an example of a downlink multicast / broadcast area determination scheme based on downlink channel quality measurement according to an embodiment of the present disclosure;

[0041] Figure 7B is an interactive flow chart showing another example of a downlink multicast / broadcast area determination solution based on downlink channel quality measurement according to an embodiment of the present disclosure;

[0042] Figure 8 is a block diagram showing a functional configuration example of an electronic device on the base station side in wireless communication according to a second embodiment of the present disclosure;

[0043] Fig. 9 is a schematic diagram showing an example of sub-zone division according to an embodiment of the present disclosure;

[0044] Fig.10 is a block diagram showing an example of a functional configuration of an electronic device at a user equipment end in wireless communication according to a second embodiment of the present disclosure;

[0045] Fig.11 is an interactive flow chart showing a downlink multicast / broadcast area determination solution based on geographic location prediction according to an embodiment of the present disclosure;

[0046] Fig.12 is an interactive flow chart showing an implementation example of the overall solution according to an embodiment of the present disclosure;

[0047] Fig.13 is a flowchart showing an example of a process of a method at a user equipment end in wireless communication according to an embodiment of the present disclosure;

[0048] Fig.14 is a flowchart showing an example of a process of a method at a user equipment end in wireless communication according to another embodiment of the present disclosure;

[0049] Fig.15 is a flowchart showing an example of a process of a method at a base station side in wireless communication according to an embodiment of the present disclosure;

[0050] Fig.16is a flowchart showing an example of a process of a method at a base station side in wireless communication according to another embodiment of the present disclosure;

[0051] Fig.17 is a block diagram showing an example structure of a personal computer as an information processing device that can be employed in an embodiment of the present disclosure;

[0052] Fig.18 is a block diagram showing a first example of a schematic configuration of an evolved node (eNB) to which the technology of the present disclosure may be applied;

[0053] Fig.19 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied;

[0054] Fig. 20 is a block diagram showing an example of a schematic configuration of a smartphone to which the technology of the present disclosure can be applied; and

[0055] Fig.21 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technology of the present disclosure can be applied. DETAILED DESCRIPTION

[0056] Exemplary embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this disclosure.

[0057] It is also necessary to explain here that in order to avoid obscuring the present disclosure due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present disclosure are shown in the accompanying drawings, while other details that are not closely related to the present disclosure are omitted.

[0058] Before describing the embodiments of the present disclosure in detail, it should be pointed out that although the technology of the present disclosure is described by taking the vehicle communication (V2X) application scenario as an example in the embodiments of the present disclosure, the technology of the present disclosure is obviously not limited to the application scenario, but can be similarly applied to any communication scenario in which the position of the communication device changes dynamically, and the example of the user device is obviously not limited to the vehicle terminal (for example, the vehicle navigation device), but can include any mobile terminal (for example, a smart phone, a tablet computer, a personal digital assistant (PDA), etc.). V2X communication can include, for example, vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, etc.

[0059] Next, we will refer to Figures 1 to 21 Embodiments of the present disclosure are described in detail.

[0060] Figure 1 is a schematic diagram showing the changes in the downlink multicast / broadcast area in different scenarios of V2X communication. Figure 1 As shown, in scenario A, the T-VUE is located in the central area of ​​its serving cell, and the R-VUEs affected by its V2X message are all located in the cell, so the multicast / broadcast only needs to be performed in this cell; in scenario B, the T-VUE is located in the boundary area of ​​two adjacent cells, and the R-VUEs affected by it are located in the two adjacent cells, so the multicast / broadcast needs to be performed in the two adjacent cells; and in scenario C, the T-VUE is located in the boundary area of ​​three adjacent cells, and the VUEs affected by it are located in the three adjacent cells, so the multicast / broadcast needs to be performed in the three adjacent cells.

[0061] It can be understood that in V2X communication, the rapid movement of vehicles will lead to rapid changes in the positions of T-VUE and R-VUEs and the members of R-VUEs, which will further lead to dynamic changes in the multicast / broadcast range and the dynamic changes in the receiving vehicles within the influence range of the V2X message. Therefore, there is an urgent need for a solution that can efficiently determine the multicast / broadcast area.

[0062] First embodiment

[0063] First, refer to Figure 2 A functional configuration example of an electronic device on the user equipment side in wireless communication according to the first embodiment of the present disclosure is described. Figure 2 : is a block diagram showing a functional configuration example of an electronic device on the user equipment side in wireless communication according to the first embodiment of the present disclosure.

[0064] like Figure 2 As shown, the electronic device 200 at the user equipment end according to this embodiment may include a measuring unit 202 and a determining unit 204 .

[0065] The measurement unit 202 may be configured to measure the downlink channel quality of the serving base station and the neighboring base station of the user equipment. The measurement event may be performed in response to a predetermined trigger event, or may be performed periodically at a predetermined period, which is not limited in the present disclosure. The predetermined trigger event may include, but is not limited to, a V2X message sending request.

[0066] The measurement result of the downlink channel quality may include one or more of a channel quality indicator (CQI), a reference signal received power (RSRP), a reference signal received quality (RSRQ), a received signal strength indicator (RSSI), and a reference signal signal to interference and noise ratio (RS-SINR). In the following description, RSRP is used as an example to describe the specific implementation of the technology of the present disclosure, but it is obvious that the technology of the present disclosure can also be implemented using CQI, RSRQ, RSSI or RS-SINR or a combination thereof instead.

[0067] Specifically, for example, the measuring unit 202 may measure the RSRP of its serving base station and neighboring base stations according to the measurement configuration information from its serving base station (eNB). The measurement configuration information may be notified to the user equipment by the serving base station through, for example, a measConfig information element carried by a radio resource control connection reconfiguration (RRCConnectionReconfiguration) message, and the measurement configuration information may include one or more of a measurement object, a base station list, a reporting method, a measurement identifier, an event parameter, etc. In this application example, the measurement object is RSRP, the base station list is a serving base station and a neighboring base station, the reporting method is periodic reporting, and the measurement method is continuous measurement.

[0068] The determining unit 204 may be configured to determine a first base station set from the serving base station and the neighboring base stations based on the measured downlink channel quality, where the first base station set represents a base station set that is to broadcast or multicast the data information from the user equipment.

[0069] Specifically, the downlink channel quality measurement results (such as change trends, amplitudes, and other information) can be used to reflect the movement trajectory of the user equipment (e.g., the sending vehicle) and its position relative to the surrounding base stations. For example, if the change trend of the measurement results of the downlink channel quality of a certain base station within a certain measurement time (e.g., the life cycle of the data information) is increasing and the amplitude of the average measurement value or the final value at the end of the measurement is large, it means that the sending vehicle is moving close to the base station and is close to the base station, so that the user equipment within the cell coverage of the base station will be affected by the data information, and the base station should be added to the first base station set to multicast / broadcast the data information of the sending user equipment to the user equipment within its cell coverage.

[0070] Specifically, the determining unit 204 may be configured to determine the first set of base stations based on the changing trend and amplitude of the measured downlink channel quality.

[0071] Preferably, as an exemplary implementation, the determining unit 204 may determine the first set of base stations based on the difference relationship between the first predetermined number of downlink channel qualities with an increasing changing trend and the amplitude ranking and the influence range of the data information.

[0072] Specifically, it is assumed that the determining unit 204 selects the downlink channel qualities (such as RSRP here) with an increasing changing trend and sorts these downlink channel qualities from large to small according to the mean value (or the final value at the end of the measurement), and takes the first K (here, it is assumed that K is equal to 3 for example) RSRP values, denoted as RSRP1, RSRP2, and RSRP3 respectively, and corresponding to base stations eNB1, eNB2, and eNB3 respectively. Then, the determining unit 204 may determine the corresponding first set of base stations according to the following difference relationships, for example:

[0073] (a) If RSRP1 - RSRP2 > T1 and RSRP1 - RSRP3 > T1, it may be determined that the first set of base stations includes only base station eNB1;

[0074] (b) If RSRP1 - RSRP2 < T2 and RSRP1 - RSRP3 > T1, it may be determined that the first set of base stations includes base stations eNB1 and eNB2; and

[0075] (c) If RSRP1 - RSRP2 < T2 and RSRP1 - RSRP3 < T2, it may be determined that the first set of base stations includes base stations eNB1, eNB2, and eNB3.

[0076] T1 and T2 respectively represent predetermined thresholds, and T1 > T2 is satisfied. A specific example of determining T1 and T2 will be described below with reference to Figure 3 A specific example of determining T1 and T2 will be described in detail. Figure 3 FIG. is a schematic diagram showing a first specific example of determining the first set of base stations according to an embodiment of the present disclosure.

[0077] In Figure 3 In the example shown, it is assumed that the influence range of the data information (such as a V2X message) is dm, the power received from eNB1 at the T-VUE is RSRP1, the power received from eNB2 at the T-VUE is RSRP2, and the power difference is RSRP1 - RSRP2. The distance from the T-VUE to eNB1 is d1, the distance from the T-VUE to eNB2 is d2, and the distance between base stations eNB1 and eNB2 is D. In this case, T1 may take the maximum value of the power difference when ensuring that all receiving vehicles R-VUE are just within the coverage range of eNB1, as Figure 3 As shown in (a), T2 can be taken to ensure that all receiving vehicles R-VUE are just within the coverage of eNB1. Figure 3 As shown in (b) of FIG. By calculating and simplifying according to the above calculation conditions, it can be found that the values ​​of T1 and T2 are related to the influence range dm of the V2X message.

[0078] The influence range dm of the V2X message is used to reflect the coverage range where the R-UE is expected to receive the message. Generally, the influence range dm of the V2X message may be related to at least one of the category of the V2X message and the moving speed of the user equipment. Exemplarily, the category of the V2X message may be distinguished by the importance or impact of the message or the location where the message occurs. In a certain example, the category may be distinguished by the priority of the message. For example, for a V2X message (high priority) containing a major traffic accident, the influence range dm of the V2X message may be larger. In another example, the category of the message is distinguished according to the location of the vehicle when the message is sent. For example, for a V2X message sent while driving in a city, its influence range may be, for example, 150 meters, while for a V2X message sent while driving on a highway, its influence range may be, for example, 320 meters. In addition, in another example, the greater the vehicle's driving speed, the greater the influence range dm should be in order to ensure the response time of the receiving vehicle.

[0079] The control of the impact range DM can be achieved in a variety of ways. For example, if the impact range of the message is within the transmission capability of the user equipment, the user equipment can form different impact ranges through power control. For example, the sending vehicle can adjust its transmission power according to the current driving speed, the category of the message to be sent, etc., so as to form the impact range of the message. If a vehicle within the impact range receives the message, it can respond accordingly (for example, adjust its own driving speed, driving route, etc.) according to the received message (for example, road safety message, etc.). In addition, the impact range DM can also be controlled by controlling the receiving vehicle to selectively parse the V2X message. For example, vehicles within the impact range receive and parse V2X messages, and for vehicles outside the impact range, since the message may not have much impact on these vehicles, these vehicles do not need to parse or respond even if they receive the message.

[0080] It should be noted that although the above three examples of determining the first base station set using the above three difference relationships are given, it is obvious that the difference relationship is not limited to the above three, but more difference relationships can be considered (for example, the difference relationship between RSRP2 and RSRP3). In a certain embodiment, in order to reduce the calculation load, it is only necessary to consider the difference relationship between the measured value of the selected downlink channel quality and the maximum value thereof to determine the first base station set.

[0081] On the other hand, when none of the above three difference relationships are satisfied, the determining unit 204 may be further configured to determine the first base station set based on the distances between the base stations corresponding to the first predetermined number of downlink channel qualities determined above. Specifically, for example, the following reference may be used: Figure 4 The first base station set is determined in the manner described. Figure 4 is a schematic diagram illustrating a second exemplary manner of determining a first base station set according to an embodiment of the present disclosure.

[0082] exist Figure 4 In the example shown, assuming that the transmission power of the transmitting vehicle T-VUE is P, and the powers of eNB1, eNB2, and eNB3 received at T-VUE are RSRP1, RSRP2, and RSRP3 respectively, then the distances d1, d2, and d3 from T-VUE to eNB1, eNB2, and eNB3 can be determined as follows:

[0083]

[0084] Then, if Figure 4 As shown, according to d1, d2, d3 and the distance D between each base station, the relative position of T-VUE is determined by using the triangulation method, and further according to the influence range dm of the V2X message, a circle with T-VUE as the center and a radius dm is obtained, and the first base station set is determined according to the coverage range of the circle.

[0085] It should be noted that although the above description is used only when the difference relationship is not satisfied Figure 4 The method shown in the figure determines the location of the T-VUE and then determines the first base station set, but this is only an example and not a limitation. Figure 4 The determination method shown has more general applicability, that is, it can also be directly used without judging the difference relationship. Figure 4 However, in order to reduce the computational load, preferably, the first base station set can be determined by using the difference relationship as described above. If the difference relationship cannot be used to determine the first base station set, Figure 4 The triangulation method shown is used to determine the first base station set, which can reduce the calculation load as much as possible and effectively determine the first base station set.

[0086] Preferably, the electronic device 200 may further include a generating unit, which may be configured to generate a report including data information and the first base station set to be sent to its serving base station. Thus, the serving base station may send the data information to each base station in the first base station set according to the received report, so that these base stations may multicast / broadcast the received data information.

[0087] It can be seen that according to the above-described scheme of determining the multicast / broadcast area based on the downlink channel quality measurement, the multicast / broadcast base station set can be quickly determined even when the location information of the user equipment is not available, for example, when the vehicle is in a tunnel or underground parking lot and the GPS signal is blocked.

[0088] In addition, for V2X communication, since both the sending vehicle and the receiving vehicle are in motion, the multicast / broadcast area also changes dynamically. Figure 1 As shown, it is assumed that the sending vehicle moves from scene A to scene B and then to scene C, so that the multicast / broadcast area also changes accordingly. Therefore, if the V2X message is transmitted between base stations after the first base station set is determined, unnecessary delay may be caused.

[0089] To solve this problem, it is preferable to consider pre-caching the V2X message in some base stations on the route of the sending vehicle, so that when these base stations fall into the multicast / broadcast area, the cached V2X message can be multicast / broadcasted immediately. In this way, unnecessary delays can be greatly reduced and the real-time performance of the V2X message can be improved.

[0090] Preferably, the determining unit 204 may be further configured to determine a second base station set from the serving base station and the neighboring base stations based on the measured downlink channel quality, the second base station set representing a base station set for pre-caching data information.

[0091] As an example implementation, the determining unit 204 may determine, according to the measurement result of the measuring unit 202 , a second predetermined number of base stations with increasing downlink channel quality change trends and higher amplitude rankings as the second base station set.

[0092] It can be understood that, as described above, for base stations whose downlink channel quality change trend is increasing and has a large amplitude, it means that the user equipment (i.e., the sending vehicle) is moving closer to these base stations, that is, these base stations are located on the route of the sending vehicle, so that the service base station of the user equipment can send data information to these base stations in advance for caching through, for example, the X2 interface. In this way, once the sending vehicle travels to the corresponding position so that these cache base stations fall into the multicast / broadcast area, these base stations can immediately multicast / broadcast the cached data information.

[0093] Specifically, for example, the determination unit 204 can select RSRPs that are increasing continuously at the end of the measurement and sort the RSRPs from large to small according to their mean (or the final value at the end of the measurement), and take the first N RSRPs, for example, N=4, so that the base stations eNB1, eNB2, eNB3, and eNB4 corresponding to RSRP1, RSRP2, RSRP3, and RSRP4 are determined as the second base station set. Figure 5 A schematic diagram showing an example of a second base station set according to an embodiment of the present disclosure is shown.

[0094] It should be noted that, generally, N ≥ K, that is, the first base station set (i.e., the multicast / broadcast base station set) is a subset of the second base station set (i.e., the cache base station set). In other words, the cache base station set generally includes a wider range of base stations, while the multicast / broadcast base station set only considers the base stations that need to perform multicast / broadcast at the current location.

[0095] Preferably, the report generated by the generating unit further includes information about the second base station set. Generally speaking, the serving base station of the user equipment is included in the determined second base station set, so that the serving base station can send data information to each base station in the second base station set in advance for caching through, for example, an X2 interface according to the received report.

[0096] As a preferred manner, since the report generated by the generating unit includes the first base station set and the second base station set, and the first base station set is usually a subset of the second base station set, the report format on the base station set can be simplified as shown in Table 1 below.

[0097] Table 1 Report format of base station set

[0098] CellID1+(1 / 0) CellID2+(1 / 0) CellID3+(1 / 0) ... CellIDN+(1 / 0)

[0099] It can be seen that the generated report includes the cell identifiers (cellID) of the determined N cache base stations and an identification bit, where "1" indicates that the base station belongs to the first base station set (multicast / broadcast base station set), and "0" indicates that the base station belongs to the second base station set (cache base station set).

[0100] In this way, when a base station changes from a cache base station to a multicast / broadcast base station, the serving base station only needs to send a one-bit flag "1" to the base station, thereby triggering the base station receiving the flag to multicast / broadcast data information. In this way, the signaling overhead between base stations can be reduced.

[0101] It should be noted that although an example implementation for determining the first base station set and the second base station set is given above, this is only an example and not a limitation. Those skilled in the art can modify the above example based on the principle of the present disclosure, that is, the downlink channel quality measurement result reflects the relative position between the user equipment and the base station, the route of the user equipment and other information, so that the corresponding multicast / broadcast area and the cache area can be determined according to the downlink channel quality measurement result. For example, the values ​​of K and N are not particularly limited, but can be selected according to actual conditions. For another example, the downlink channel quality measurement result is not necessarily RSRP, but can be CQI, RSRQ, RSSI or RS-SINR, etc. For another example, the multicast / broadcast area can be determined directly using a triangulation method instead of a difference relationship.

[0102] In addition, consider the following scenario: not all user equipment within the coverage of the multicast / broadcast base station need to receive data information from the sending user equipment. Generally speaking, only user equipment within a certain range around the sending user equipment needs to receive the data information. Therefore, it is expected to avoid unnecessary reception of user equipment in order to reduce power consumption.

[0103] In the prior art, there are usually two broadcasting modes, namely, the multicast / multicast single frequency network (MBSFN) mode and the single cell point-to-multipoint (SC-PTM) mode. For the MBSFN mode, since it cannot be multiplexed with the physical downlink shared channel (PDSCH) or synchronization signaling, and only six subframes in each frame are allocated to MBSFN, the capacity of MBSFN is limited. MBSFN has a common problem with broadcasting, that is, there is unnecessary reception. For example, when the sending vehicle leaves the V2V transmission range, the vehicles within the MBSFN range must detect all data packets, thereby increasing power consumption. For the SC-PTM mode, it is multicast to a specific user device, and before the multicast, the eNB will allocate a temporary mobile group identifier (TMGI) to the corresponding user device, thereby avoiding unnecessary reception to a certain extent. However, for the V2X communication scenario, due to the rapid movement and changes of vehicles, all vehicles need to frequently report geographic location information so that the eNB can determine which vehicles are assigned the same TMGI, and when the geographic location information is not available, it is impossible to allocate appropriate TMGI to the vehicle in real time. Therefore, the existing SC-PTM method has a large signaling overhead and has certain application limitations.

[0104] In view of the above problems, it is desirable to provide a solution that can avoid unnecessary reception of user equipment while ensuring data transmission performance and reducing signaling overhead.

[0105] In V2X communication, V2X messages can be divided into high priority messages and low priority messages. Since MBSFN has limited dedicated resources and does not require group identifiers to be assigned to users, it has short latency and wide coverage, so high priority messages can use the MBSFN method first. The SC-PTM method uses PDSCH resources and requires group identifiers to be assigned to users, so low priority messages can use the SC-PTM method. The user equipment can report the priority of the data information sent at this time to the serving base station when sending a scheduling request (SR) to request the allocation of uplink communication resources to the serving base station.

[0106] However, as mentioned above, if the existing SC-PTM method is directly applied to the V2X communication scenario, it may result in a large signaling overhead. Therefore, the present disclosure proposes an improved SC-PTM method for communication scenarios (such as V2X communication scenarios) where the location of communication devices changes dynamically.

[0107] Taking the V2X communication scenario as an example, since the vehicles affected by the V2X message are generally located within a certain distance around the sending vehicle, it is considered that the sending vehicle broadcasts a group identifier (e.g., RNTI), and only the surrounding vehicles that can correctly receive the group identifier need to receive the V2X message and decode the V2X message scrambled by the group identifier. The group identifier can be assigned by the serving base station in response to a priority indication indicating the priority of the V2X message sent by the user equipment.

[0108] In addition, since new vehicles may continuously join or leave the sending vehicle, in order to ensure that the newly joined vehicles can correctly decode the V2X message, the sending vehicle can periodically broadcast the group identifier.

[0109] According to the above embodiments, it is possible to ensure the reception performance of high-priority data information while avoiding unnecessary reception and reduce signaling overhead.

[0110] It can be seen that in V2X communication, preferably, the above-mentioned electronic device 200 not only supports cellular communication (cellular communication) for communicating with a base station, but also supports device-to-device (D2D) communication for direct communication with other vehicle devices.

[0111] As a preferred implementation, the electronic device 200 may further include a first interface (e.g., Uu interface) supporting cellular communication and a second interface (e.g., PC5 interface) supporting D2D communication. For example, the electronic device 200 may send a priority indication indicating the priority of the data information to the serving base station via the first interface and receive a group identifier sent by the serving base station based on the priority indication, and then periodically broadcast the group identifier via the second interface.

[0112] It can be understood that the electronic device 200 can be implemented at the chip level, or can be implemented at the device level by including other external components. For example, the electronic device 200 can work as a user device as a whole machine, and can include the first interface and the second interface for cellular communication and inter-device communication. In addition, it should be understood that the first interface and the second interface are only logical divisions made according to their functions. In actual implementation, these two interfaces can also be combined into one interface, which can support both cellular communication and inter-device communication.

[0113] Corresponding to the electronic device at the user device end described above, the following will refer to Figure 6 An electronic device at a base station according to an embodiment of the present disclosure is described. Figure 6 : is a block diagram showing a functional configuration example of an electronic device on the base station side in wireless communication according to the first embodiment of the present disclosure.

[0114] like Figure 6 As shown, the electronic device 600 according to this embodiment may include a determination unit 602 and a communication interface 604 .

[0115] The determining unit 602 may be configured to determine the data information and the first base station set according to a report from a user equipment served by the base station. The first base station set may be determined by the user equipment according to downlink channel quality measurement results of the serving base station and surrounding base stations as described above, and represents a base station set for multicasting / broadcasting the data information of the user equipment.

[0116] The communication interface 604 may be configured to perform transceiver operations. Specifically, the electronic device 600 may receive a report including data information and the first base station set from the user equipment via the communication interface 604, and send the data information to each base station in the first base station set via the communication interface 604 according to the determination result of the determination unit 602. It should be noted that the communication interface 604 is optional (in Figure 6 For example, when the electronic device 600 is implemented at the chip level, it may not include a transceiver function and does not need to include the communication interface 604.

[0117] Preferably, as described above, the report from the user equipment may further include a second base station set, so that the determining unit 602 may be further configured to determine the second base station set according to the received report, so as to send the data information to each base station in the second base station set for caching via the communication interface 604. The second base station set may be determined by the user equipment according to the downlink channel quality measurement results of the surrounding base stations as described above.

[0118] The specific process of determining the first base station set and the second base station set can be found in the above description, which will not be repeated here.

[0119] Preferably, the determination unit 602 may be further configured to determine an identifier indicating whether a specific base station belongs to the first base station set or the second base station set based on the received report, so as to send the identifier together with the data information to the base station. As described above, when the user equipment reports the determined base station set to the serving base station, in addition to the identifiers (IDs) of the respective base stations, the report also includes an identifier indicating whether the base station belongs to the first base station set or the second base station set. For example, the identifier "1" indicates that the base station belongs to the first base station set, and the identifier "0" indicates that the base station belongs to the second base station set, so that the electronic device 600 at the base station end may send the data information and the identifier "1" to the base station belonging to the first base station set based on the determined identifier, so as to instruct the base station to perform multicast / broadcast after receiving the data information, and send the data information and the identifier "0" to the base station belonging to the second base station set, so as to instruct the base station to only cache the received data information without performing multicast / broadcast.

[0120] In addition, preferably, as the user equipment moves, when the determination unit 602 determines, based on the received report, that a base station originally belonging to the second base station set becomes a base station belonging to the first base station set, it may generate an identifier indicating that the base station belongs to the first base station set to send to the base station. Specifically, for example, at this time, the electronic device 600 may send the generated identifier "1" to the corresponding base station to trigger the base station to multicast / broadcast the cached data information.

[0121] Here, it should be pointed out that although the above describes an example implementation scheme in which the first base station set and the second base station set are determined by the user equipment side, alternatively, these determination operations can also be performed by the base station side, that is, the user equipment reports the obtained downlink channel quality measurement results to its serving base station, so that the base station determines the first base station set and the second base station set according to the above method. In this case, the user equipment only needs to send data information to the serving base station, and the serving base station will send the data information and the corresponding identifier to the corresponding base station according to the base station set determined by itself.

[0122] In addition, preferably, in order to avoid unnecessary reception, the determination unit 602 may also determine the group identifier of the user equipment according to the priority indication indicating the priority of the data information received from the user equipment, so as to send it to the user equipment through the communication interface 604. Specifically, if it is determined that the data information belongs to low priority information, a corresponding group identifier may be allocated to the user equipment, so that the user equipment may broadcast the group identifier, so that only the user equipment that can receive the group identifier can receive and decode the data information scrambled by the group identifier.

[0123] As an example implementation, the electronic device 600 may scramble the received data information using the group identifier, and send the scrambled data information to each base station in the first base station set and the second base station set. Alternatively, as another example implementation, the electronic device 600 may also send the group identifier and the data information together to each base station in the first base station set and the second base station set without scrambling, and when multicast / broadcast is required, the corresponding base station scrambles the data information using the group identifier and performs multicast / broadcast.

[0124] It is understood that similarly, the electronic device 600 can be implemented at the chip level, or can be implemented at the device level by including other external components. For example, when implemented at the chip level, the electronic device 600 may not include the communication interface 604; and when implemented at the device level, it can be used as a complete machine to work as a base station.

[0125] In addition, it should be understood that the various units in the electronic device 200 and the electronic device 600 are only logical functional modules divided according to the specific functions implemented by them, rather than being used to limit the specific implementation method. In actual implementation, the various functional units can be implemented as independent physical entities, or can also be implemented by a single entity (for example, a processor (CPU or DSP, etc.), an integrated circuit, etc.).

[0126] In order to further understand the technical solutions in the above embodiments, Fig. 7A and Figure 7B The following briefly describes an example process for implementing a downlink multicast / broadcast area determination solution based on downlink channel quality measurement.

[0127] Fig. 7A is an interactive flow chart illustrating an example of a downlink multicast / broadcast area determination scheme based on downlink channel quality measurement according to an embodiment of the present disclosure.

[0128] First, if Fig. 7A As shown, in response to a predetermined trigger event or according to a predetermined period, the user equipment (here, for example, the sending vehicle T-VUE) starts to measure the downlink channel quality of the surrounding base stations. Then, in step S701, the sending vehicle T-VUE sends a scheduling request (SR) to the serving base station (eNB) on the corresponding resources to request the allocation of uplink transmission resources. Subsequently, in step S702, the serving base station eNB allocates uplink resources to the T-VUE through uplink grant (ULgrant) signaling. Then, at the end of the measurement, in step S703, the sending vehicle T-VUE reports the data information and the base station set (including the first base station set and the second base station set) determined according to the measured downlink channel quality to the serving base station on the allocated uplink resources. The reporting format of the base station set can be, for example, as shown in Table 1 above.

[0129] Alternatively, as described above, the determination of the first base station set and the second base station set may also be performed by the base station side. Figure 7B Describe the interaction flow diagram for this scenario.

[0130] Figure 7B is an interactive flow chart showing another example of a downlink multicast / broadcast area determination solution based on downlink channel quality measurement according to an embodiment of the present disclosure.

[0131] Figure 7B The interactive flow chart shown is similar to Fig. 7A The interaction flow chart shown is basically the same, with the only difference being that in step S703', instead of reporting the determined base station set to the serving base station, the user equipment reports the data information and the downlink channel quality measurement result (e.g., RSRP) to the serving base station, so that the serving base station determines the first base station set and / or the second base station set based on the measurement result and using the corresponding algorithm.

[0132] It should be pointed out that Fig. 7A and Figure 7B The interactive flowchart shown is only an example and not a limitation. Those skilled in the art may also modify the interactive flowchart according to the above detailed description and the principles of the present disclosure. For example, a priority indication indicating the priority of the data information may be sent to the serving base station at the same time as the SR is sent. For another example, when sending data information and downlink channel quality measurement results to the serving base station, it is also necessary to send information such as the impact range of the data information to the serving base station so that the base station can determine the first base station set and the second base station, etc. All such modifications should obviously fall within the scope of the present disclosure and will not be listed one by one here.

[0133] Second embodiment

[0134] The above describes a scheme for determining a multicast / broadcast area based on downlink channel quality measurement. Figures 8 to 11 A scheme for determining a multicast / broadcast area based on geographic location prediction is described.

[0135] Figure 8 : is a block diagram showing a functional configuration example of an electronic device on the base station side in wireless communication according to the second embodiment of the present disclosure.

[0136] like Figure 8 As shown, the electronic device 800 according to this embodiment may include a sub-area set determining unit 802 and a base station set determining unit 804 .

[0137] The sub-area set determining unit 802 may be configured to determine the first sub-area set according to a mobile position of the user equipment and an influence range of the data information from the user equipment.

[0138] The sub-zones here are obtained by dividing the cell coverage area, which can usually be pre-configured at the network end, and the serving base station has mastered the division of sub-zones in the cell and adjacent cells in advance.

[0139] As an example, the division of sub-areas may include but is not limited to the following methods: unified division across the entire network based on geographic location coordinates (e.g., longitude and latitude), so that each sub-area has a unique sub-area identifier (ZoneID_Global) across the entire network; independent division within a single cell based on actual conditions, for example, for small cells, the granularity of sub-area division may be smaller so that the sub-areas obtained are denser, while for macro cells, the granularity of sub-area division may be larger so that the sub-areas obtained are sparser, in which case each sub-area may be uniquely identified using a cell identifier and a sub-area identifier within the cell (CellID+ZoneID_Local); and division within a cell group consisting of two or more adjacent cells, in which case each sub-area may be uniquely identified using a cell group identifier and a sub-area identifier within the group (CellSetID+ZoneID_Local).

[0140] It can be seen that there is no necessary connection between the sub-zone and the cell. It is just that from the perspective of the division granularity, the granularity of the sub-zone is generally coarser than the granularity of the specific geographic location information and finer than the granularity of the cell. In addition, the division of the sub-zone is certainly not limited to the above-listed methods. Those skilled in the art can perform appropriate sub-zone division according to actual needs, and the specific division granularity can also be determined according to the actual scenario. This disclosure does not make specific restrictions on this. Fig. 9 FIG. 2 is a schematic diagram showing an example of sub-region division according to an embodiment of the present disclosure. Fig. 9 As shown, each grid can represent a sub-region (zone).

[0141] As an example implementation, when geographic location information is available, the sub-area set determination unit 802 may be configured to estimate the mobile position of the user device based on the current location information and moving speed reported by the user device, thereby determining the sub-area to which the mobile position belongs based on, for example, a correspondence between pre-stored location information and sub-areas (for example, in the form of a lookup table).

[0142] Specifically, Fig. 9As shown, after receiving the reported information, the electronic device 800 estimates the mobile position C' of the user equipment after the time interval ▽t according to the current position C and the moving speed V of the user equipment, and determines the sub-area to which the mobile position belongs. The time interval ▽t represents the time interval between the moment when the serving base station receives the reported information and the corresponding broadcast resource. The determination process can be expressed as:

[0143] C'=C+V×▽t

[0144] C'→ZoneID

[0145] Alternatively, as another example implementation, if the location information is not available, the mobile location of the user equipment can also be estimated based on the measurement results of the downlink channel quality of the surrounding base stations by the user equipment. That is, the sub-area set determination unit 802 can be further configured to estimate the mobile location of the user equipment based on the downlink channel quality measurement results of the base station and the neighboring base stations reported by the user equipment, and then determine the sub-area to which the mobile location belongs based on the pre-stored corresponding relationship.

[0146] Specifically, as mentioned above Figure 4 In the manner described above, the sub-area set determination unit 802 can use a triangulation method to estimate the mobile position of the user equipment according to the downlink channel quality measurement result and the distance between the base stations, and the downlink channel quality measurement result at least includes the change trend and amplitude of the downlink channel quality. The specific implementation process is the same as that of the above reference Figure 4 The process of determining the relative position of the user equipment described is basically the same, the only difference is that, in the above description, the user equipment estimates its position, while in this embodiment, the user equipment needs to report the measurement results to the serving base station, and the base station estimates the mobile position of the user equipment. The process will not be repeated here.

[0147] It can be understood that in the above scheme for estimating the mobile position of the user equipment based on the downlink channel quality measurement results, since the downlink channel quality measurement results with an increasing change trend are selected, similar to the above scheme based on geographic location information, the estimated mobile position here is also the predicted position on the moving trajectory of the user equipment.

[0148] After the sub-area where the user equipment is located is determined as described above, the sub-area set determination unit 802 can determine the first sub-area set affected by the data information based on the determined sub-area where the user equipment is located and in combination with the influence range dm of the data information reported by the user equipment, that is, ZoneID+dm→Zone Set.

[0149] Then, the base station set determination unit 804 can be configured to determine the first base station set based on the cells to which each sub-area in the determined first sub-area set belongs, so that the serving base station can send data information from the user equipment to each base station in the first base station set for multicast / broadcast, that is, Zone Set→eNB Set.

[0150] It can be understood that in the above technical solution, the change of the first base station set is determined based on the change of the sub-area instead of the change of the specific geographic location information. Since the granularity of the sub-area division is between the cell and the specific geographic location, in this solution, although the user equipment will still periodically report the geographic location information or channel quality measurement information, if the estimated sub-area where the user equipment is located does not change, then the sub-area set affected by the data information will not change, and thus the base station set to be multicast / broadcast will not change. In this way, for V2X communication scenarios where the location of vehicles changes frequently, for example, the processing load can be greatly reduced and the signaling overhead can be reduced.

[0151] Similarly, as described above, the determination of the second base station set as the cache base station set may also be performed by the serving base station side. Preferably, the base station set determination unit 804 may be further configured to determine the second base station set according to the downlink channel quality measurement results of the serving base station and the neighboring base stations reported by the user equipment, so that the serving base station may send data information to each base station in the second base station set in advance for caching.

[0152] Specifically, the base station determination unit 804 may determine a predetermined number of base stations with increasing amplitude rankings and an increasing trend in the downlink channel quality measurement results as the second base station set. The specific manner of determining the second base station set is the same as the determination manner performed by the above user equipment end, and will not be repeated here.

[0153] It is understood that the electronic device 800 can be implemented at the chip level, or can also be implemented at the device level by including other external components. For example, the electronic device 800 can also include a communication interface to work as a base station as a whole machine, and the communication interface can be configured to perform transceiver operations, for example, with user equipment and with other base stations.

[0154] Here, it should be pointed out that the electronic device 800 here can also perform operations for avoiding unnecessary reception like the above-mentioned electronic device 600. For details, please refer to the description of the corresponding position above, which will not be repeated here.

[0155] Corresponding to the electronic device 800 at the base station end, the following will refer to Fig.10 Describes an example of a functional configuration of an electronic device at a user device end. Fig.10: is a block diagram showing a functional configuration example of an electronic device on the user equipment side in wireless communication according to the second embodiment of the present disclosure.

[0156] like Fig.10 As shown, the electronic device 1000 according to this embodiment may include a generating unit 1002 and a communication interface 1004 .

[0157] The generating unit 1002 may be configured to generate a report including at least an influence range of the data information of the user equipment.

[0158] Then, the electronic device 1000 sends the generated report to the serving base station via the communication interface 1004, so that the serving base station can determine the first sub-area set according to the sub-area to which the mobile position of the user equipment belongs and the influence range of the data information, and then determine the first base station set based on the first sub-area set, so as to send the data information from the user equipment to each base station in the first base station set for multicast / broadcasting.

[0159] The communication interface 1004 may be configured to support cellular communication and inter-device communication. It is understood that the communication interface 1004 is optional (in Fig.10 For example, when the electronic device 1000 is implemented at the chip level, it may not include a transceiver function and does not need to include the communication interface 1004.

[0160] Preferably, the generated report may also include current location information and moving speed of the user equipment, so that the serving base station can estimate the moving location of the user equipment.

[0161] In addition, preferably, the generated report may also include downlink channel quality measurement results of the user equipment on the serving base station and surrounding base stations, so that the serving base station can estimate the mobile position of the user equipment and determine the second base station set for pre-caching data information.

[0162] It should be noted that the determination of the mobile position can also be performed on the user equipment side. Specifically, the user equipment can estimate its mobile position based on the downlink channel quality measurement result, and then send the mobile position to the serving base station, so that the serving base station can determine the corresponding sub-area set and then determine the first base station set based on the position and the sub-area division information. Similarly, the determination of the second base station set can also be performed on the user equipment side.

[0163] It should be understood that the electronic device 1000 can be implemented at the chip level or the device level. When implemented at the chip level, the electronic device 1000 may not include the above-mentioned communication interface 1004; and when implemented at the device level, it can work as a complete machine as a user device.

[0164] In addition, it should be noted that the various units in the electronic device 800 and the electronic device 1000 are only logical functional modules divided according to the specific functions implemented by them, and are not used to limit the specific implementation method. In actual implementation, the various functional units mentioned above can be implemented as independent physical entities, or can also be implemented by a single entity (for example, a processor (CPU or DSP, etc.), an integrated circuit, etc.).

[0165] In order to further facilitate the understanding of the solution of this embodiment, the following will refer to Fig.11 An example interaction flow describing a scenario based on geolocation prediction. Fig.11 It is an interactive flow chart showing a downlink multicast / broadcast area determination solution based on geographic location prediction according to an embodiment of the present disclosure.

[0166] like Fig.11 As shown, first, in step S1101, in response to a predetermined trigger event or according to a predetermined period, the user equipment (here, for example, a sending vehicle) sends a scheduling request SR on the corresponding resources. Then, in step S1102, the serving base station eNB allocates uplink resources to the user equipment through UL grant. Next, in step S1103, the user equipment reports information to the serving base station on the allocated uplink resources. The reported information may include the data information itself and the impact range dm of the data information, and may also optionally include the current geographic location of the user equipment, the moving speed, the downlink channel quality measurement results for the surrounding base stations, etc. In this way, the serving base station can determine the first base station set and the optional second base station set based on the reported information from the user equipment, and send the data information from the user equipment to these base stations through, for example, the X2 interface.

[0167] Here, it should be noted that the operations described above as being performed at the base station end or the user equipment end are not limited to being performed only at the described end, but can be performed at the other end instead, as long as the information required to perform the operation is sent to the other end. Therefore, the present disclosure does not particularly limit the subject that performs each operation, and those skilled in the art can choose to perform the corresponding operation at a suitable end according to the specific circumstances (including processing capacity, communication load, power consumption, etc.) when performing the technical solution of the present disclosure, so as to achieve optimal system performance.

[0168] In addition, it should be pointed out that although the functional configuration of the electronic device in each embodiment is described above, this is only an example and not a limitation, and those skilled in the art can add, delete, combine, sub-combine and change the functions in the above-mentioned embodiments as needed, and all such variations should be considered to fall within the scope of the present disclosure.

[0169] In order to further facilitate the overall understanding of the technical solution of the present disclosure, the following will refer to Fig.12 Describe the overall workflow of the present disclosure. Fig.12 is an interactive flow chart showing an implementation example of the overall solution according to an embodiment of the present disclosure. Fig.12 In the description, the V2X communication scenario is taken as an example.

[0170] like Fig.12 As shown, first, in response to a predetermined trigger event or according to a predetermined period, the vehicle T-VUE sends a scheduling request SR to the serving base station eNB, and may also simultaneously send a priority indication of the priority of the data information (V2X message) to be sent to the serving base station eNB.

[0171] Then, the serving base station eNB allocates uplink resources to the sending vehicle T-VUE through ULgrant. At the same time, according to the received priority indication, if it indicates that the V2X message is of low priority, it means that the SC-PTM broadcast method can be used, so that the serving base station eNB also sends the allocated group identifier (GroupID) to the sending vehicle T-VUE.

[0172] Then, the sending vehicle T-VUE broadcasts the group identifier. Since only the receiving vehicles R-VUE within a certain range around the sending vehicle can receive the group identifier and then receive and decode the data information scrambled by GroupID, unnecessary reception can be avoided.

[0173] Next, the sending vehicle T-VUE reports the data information together with the determined base station set (including the first base station set and the optional second base station set) or the influence range dm and geographic location information of the data information or the downlink channel quality measurement results to the serving base station eNB.

[0174] Next, the serving base station eNB sends the data information and the identifier to the corresponding base station according to the received reporting information. For example, for the multicast / broadcast base station, the identifier "1" is sent, and for the cache base station, the identifier "0" is sent, so that the base station receiving the corresponding identifier can multicast / broadcast or cache the received data information. In addition, it should be noted that, as described above, in the case of low-priority data information, the data information sent to the multicast / broadcast base station and the cache base station can be data information that has been scrambled using the group identifier, or the serving base station can also send the original data information and the group identifier together to each base station, so that each base station uses the received group identifier to scramble and multicast / broadcast the data information when performing multicast / broadcast. In addition, in order to ensure that the newly added receiving vehicle can correctly receive and demodulate the data information, the sending vehicle can periodically broadcast its group identifier.

[0175] It should be noted that reference Fig.12The overall interaction process described is only an example, and those skilled in the art can modify the interaction process according to the principles of the present disclosure. In addition, the order of the various operations described above is not particularly limited, but can be appropriately adjusted according to actual needs, for example, can be executed in parallel or independently.

[0176] Corresponding to the above-mentioned device embodiments, the present disclosure also describes the following method embodiments.

[0177] Fig.13 The present invention is a flowchart showing an example of a method of a user equipment side in wireless communication according to an embodiment of the present disclosure.

[0178] like Fig.13 As shown, the method 1300 according to this embodiment starts at step S1301. In step S1301, the downlink channel quality of the serving base station and the neighboring base station of the user equipment is measured. The downlink channel quality may include one or more of CQI, RSRP and RSRQ.

[0179] Then, the method proceeds to step S1302. In step S1302, a first base station set is determined from the serving base station and the neighboring base stations based on the measured downlink channel quality, and the first base station set represents a base station set for multicasting or broadcasting the data information. Specifically, the first base station set can be determined based on the change trend and amplitude of the downlink channel quality and in combination with the influence range of the data information. The specific determination process can be referred to the description of the corresponding position above, which will not be repeated here.

[0180] Preferably, the method may also include a step of determining a second base station set based on the measured downlink channel quality, a step of generating a report including data information, the determined first base station set and an optional second base station set, a step of broadcasting a group identifier, and a step of sending the generated report, etc.

[0181] It should be understood that the method embodiments described herein are similar to those described above with reference to Figure 2 The described embodiment of the electronic device 200 corresponds to the embodiment of the electronic device 200, therefore, the contents not described in detail here can refer to the description of the corresponding position above and will not be repeated here.

[0182] Fig.14 Detailed description is a flowchart showing an example of a process of a method at a base station side in wireless communication according to an embodiment of the present disclosure.

[0183] like Fig.14 As shown, the method according to this embodiment starts at step S1401. In step S1401, corresponding data information and a first base station set are determined according to a report from a user equipment served by the base station.

[0184] Then, the method proceeds to step S1402. In step S1402, data information is sent to each base station in the first base station set.

[0185] Preferably, the method further includes the steps of determining the second base station set according to the report information and sending the data information to each base station in the second base station set, allocating a group identifier to the user equipment, and scrambling the data information using the group identifier. In addition, preferably, while sending the data information, an identifier indicating whether the base station is a multicast / broadcast base station or a cache base station is also sent to the corresponding base station to indicate whether the base station is to multicast / broadcast the received data information.

[0186] It should be understood that the method embodiments described herein are similar to those described above with reference to Figure 6 The embodiment of the electronic device 600 at the base station described above corresponds to the embodiment of the electronic device 600 at the base station end, so the contents not described in detail here can refer to the description of the corresponding position above and will not be repeated here.

[0187] Fig.15 is a flowchart showing an example of a process of a method at a base station according to another embodiment of the present disclosure.

[0188] like Fig.15 As shown, the method starts at step S1501. In step S1501, a first sub-area set is determined according to the sub-area to which the mobile position of the user equipment served by the base station belongs and the influence range of the data information from the user equipment, and the sub-area is obtained by dividing the cell coverage range. Preferably, the mobile position of the user equipment can be estimated based on the current geographical location information and the moving speed information, or the mobile position of the user equipment can be estimated based on the downlink channel quality measurement result reported by the user equipment and the distance between base stations by using the triangulation method.

[0189] Then, the method proceeds to step S1502. In step S1502, a first base station set is determined according to cells to which each sub-area in the first sub-area set belongs, so as to send data information to each base station in the first base station set in subsequent steps.

[0190] Preferably, the method may further include steps for determining a second base station set based on the downlink channel quality measurement result and sending data information to each base station in the second base station set.

[0191] It should be understood that the method embodiments herein are similar to those described above. Figure 8 The described embodiment of the electronic device 800 at the base station side corresponds to the embodiment of the described embodiment. Therefore, the contents not described in detail here can refer to the description of the corresponding position above and will not be repeated here.

[0192] Fig.16is a flowchart showing an example of a process of a method at a user equipment side in wireless communication according to another embodiment of the present disclosure.

[0193] like Fig.16 As shown, the method 1600 according to this embodiment starts at step S1601. In step S1601, a report of an impact range including at least data information of a user equipment is generated.

[0194] Then, the method proceeds to step S1602. In step S1602, the generated report information is sent to a serving base station of the user equipment.

[0195] Preferably, the report may also include the current location information, moving speed, downlink channel quality measurement results of surrounding base stations, etc. of the user equipment, so that the serving base station can determine the mobile position of the user equipment, and then determine the first sub-area set based on the influence range of the data information, and then determine the first base station set.

[0196] It should be understood that the method embodiments described herein are similar to those described above with reference to Fig.10 The described embodiment corresponds to the electronic device 1000 on the user device side, therefore, the contents not described in detail here can refer to the description of the corresponding position above and will not be repeated here.

[0197] According to the above embodiments of the present disclosure, the technical solution of the present disclosure can achieve at least one or more of the following advantages:

[0198] (1) By determining the multicast / broadcast base station set based on the downlink channel quality measurement result, the problem when the geographic location information is unavailable is solved, and the defect of high signaling overhead caused by the base station maintaining the location information of all vehicles to determine the multicast / broadcast base station set in the prior art is overcome;

[0199] (2) By determining a set of cache base stations, data information is sent to these base stations in advance for caching. Once these base stations become multicast / broadcast base stations, multicast / broadcast can be performed immediately, thus reducing latency.

[0200] (3) By determining the change of a multicast / broadcast base station based on a change of a sub-zone instead of a change of a specific geographical location, it is possible to avoid determining the multicast / broadcast base station too frequently, thereby reducing the processing load, which is particularly beneficial when the geographical location of a user equipment changes frequently; and

[0201] (4) By selecting different multicast modes according to the priority of data information and allocating group identifiers for broadcasting to user devices sending low-priority data information, not only can the reception performance of high-priority data information be guaranteed, but also unnecessary reception can be avoided, thereby reducing device power consumption.

[0202] It should be understood that the machine-executable instructions in the storage medium and program products according to the embodiments of the present disclosure can also be configured to execute methods corresponding to the above-mentioned device embodiments. Therefore, the contents not described in detail here can refer to the description of the previous corresponding positions and will not be repeated here.

[0203] Accordingly, the storage medium for carrying the program product including the machine executable instructions is also included in the disclosure of the present invention, including but not limited to a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and the like.

[0204] In addition, it should be noted that the above series of processes and devices can also be implemented by software and / or firmware. In the case of being implemented by software and / or firmware, from a storage medium or a network to a computer with a dedicated hardware structure, such as Fig.17 The general-purpose personal computer 1700 shown installs the programs constituting the software, and when the various programs are installed, the computer can execute various functions and the like. Fig.17 : is a block diagram showing an example structure of a personal computer as an information processing device employable in the embodiments of the present disclosure.

[0205] exist Fig.17 In the embodiment, a central processing unit (CPU) 1701 executes various processes according to a program stored in a read-only memory (ROM) 1702 or a program loaded from a storage section 1708 to a random access memory (RAM) 1703. In the RAM 1703, data required when the CPU 1701 executes various processes and the like is also stored as needed.

[0206] The CPU 1701, the ROM 1702, and the RAM 1703 are connected to one another via a bus 1704. To the bus 1704, an input / output interface 1705 is also connected.

[0207] The following components are connected to the input / output interface 1705: an input section 1706 including a keyboard, a mouse, etc.; an output section 1707 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1708 including a hard disk, etc.; and a communication section 1709 including a network interface card such as a LAN card, a modem, etc. The communication section 1709 performs communication processing via a network such as the Internet.

[0208] A drive 1710 is also connected to the input / output interface 1705 as needed. A removable medium 1711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is mounted on the drive 1710 as needed so that a computer program read therefrom is installed into the storage section 1708 as needed.

[0209] In the case where the above-described series of processing is realized by software, a program constituting the software is installed from a network such as the Internet or a storage medium such as the removable medium 1711 .

[0210] It should be understood by those skilled in the art that such storage media is not limited to Fig.17 The removable medium 1711 shown has a program stored therein and is distributed separately from the device to provide the program to the user. Examples of the removable medium 1711 include magnetic disks (including floppy disks (registered trademark)), optical disks (including compact disk read-only memory (CD-ROM) and digital versatile disks (DVD)), magneto-optical disks (including minidiscs (MD) (registered trademark)), and semiconductor memories. Alternatively, the storage medium may be the ROM 1702, a hard disk included in the storage section 1708, or the like, in which the program is stored and distributed to the user together with the device containing them.

[0211] Application Examples

[0212] The technology disclosed in the present invention can be applied to various products, including base stations and user equipment. Specifically, the base station can be implemented as any type of evolved Node B (eNB), such as macro eNB and small eNB. Small eNB can be an eNB that covers a cell smaller than a macro cell, such as a micro eNB, a micro eNB, and a home (femto) eNB. Alternatively, the base station can be implemented as any other type of base station, such as a NodeB and a base transceiver station (Base Transceiver Station, BTS). The base station may include: a main body (also called a base station device) configured to control wireless communications; and one or more remote radio heads (Remote Radio Head, RRH) arranged in a place different from the main body. In addition, the various types of terminals described below can all work as base stations by temporarily or semi-persistently performing base station functions.

[0213] 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) or a vehicle-mounted terminal (such as a car navigation device). The user equipment may also be implemented as a terminal that performs machine-to-machine (M2M) communication (also referred to as a machine type communication (MTC) terminal). In addition, the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above-mentioned terminals.

[0214] The following will refer to Figures 18 to 21 Application examples according to the present disclosure are described.

[0215] [Application examples for base stations]

[0216] (First application example)

[0217] Fig.18 18 is a block diagram showing a first example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied. The eNB 1800 includes one or more antennas 1810 and a base station device 1820. The base station device 1820 and each antenna 1810 may be connected to each other via an RF cable.

[0218] Each of the antennas 1810 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 the base station device 1820 to transmit and receive wireless signals. Fig.18 As shown, the eNB 1800 may include multiple antennas 1810. For example, the multiple antennas 1810 may be compatible with multiple frequency bands used by the eNB 1800. Fig.18 An example is shown in which the eNB 1800 includes a plurality of antennas 1810 , but the eNB 1800 may also include a single antenna 1810 .

[0219] The base station device 1820 includes a controller 1821 , a memory 1822 , a network interface 1823 , and a wireless communication interface 1825 .

[0220] The controller 1821 may be, for example, a CPU or a DSP, and operates various functions of the higher layers of the base station device 1820. For example, the controller 1821 generates a data packet based on the data in the signal processed by the wireless communication interface 1825, and transmits the generated packet via the network interface 1823. The controller 1821 may bundle data from a plurality of baseband processors to generate a bundled packet, and transmit the generated bundled packet. The controller 1821 may have a logical function to perform the following control: the control may be such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. The control may be performed in conjunction with a nearby eNB or core network node. The memory 1822 includes a RAM and a ROM, and stores programs executed by the controller 1821 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

[0221] The network interface 1823 is a communication interface for connecting the base station device 1820 to the core network 1824. The controller 1821 can communicate with the core network node or another eNB via the network interface 1823. In this case, the eNB 1800 and the core network node or other eNBs can be connected to each other through a logical interface (such as an S1 interface and an X2 interface). The network interface 1823 can also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 1823 is a wireless communication interface, the network interface 1823 can use a higher frequency band for wireless communication compared to the frequency band used by the wireless communication interface 1825.

[0222] The wireless communication interface 1825 supports any cellular communication scheme (such as long term evolution (LTE) and LTE-Advanced), and provides a wireless connection to a terminal located in a cell of the eNB 1800 via an antenna 1810. The wireless communication interface 1825 may generally include, for example, a baseband (BB) processor 1826 and an RF circuit 1827. The BB processor 1826 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing of layers (e.g., L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol (PDCP)). Instead of the controller 1821, the BB processor 1826 may have a part or all of the above-mentioned logical functions. The BB processor 1826 may be a memory storing a communication control program, or a module including a processor configured to execute a program and related circuits. Updating the program may change the function of the BB processor 1826. The module may be a card or a blade inserted into a slot of the base station device 1820. Alternatively, the module may also be a chip mounted on a card or a blade. Meanwhile, the RF circuit 1827 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 1810 .

[0223] like Fig.18 As shown, the wireless communication interface 1825 may include multiple BB processors 1826. For example, the multiple BB processors 1826 may be compatible with multiple frequency bands used by the eNB 1800. Fig.18 As shown, the wireless communication interface 1825 may include multiple RF circuits 1827. For example, the multiple RF circuits 1827 may be compatible with multiple antenna elements. Fig.18 An example is shown in which the wireless communication interface 1825 includes a plurality of BB processors 1826 and a plurality of RF circuits 1827 , but the wireless communication interface 1825 may also include a single BB processor 1826 or a single RF circuit 1827 .

[0224] (Second application example)

[0225] Fig.19 1 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied. The eNB 1930 includes one or more antennas 1940, a base station device 1950, and an RRH 1960. The RRH 1960 and each antenna 1940 can be connected to each other via an RF cable. The base station device 1950 and the RRH 1960 can be connected to each other via a high-speed line such as an optical fiber cable.

[0226] Each of the antennas 1940 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH 1960 to transmit and receive wireless signals. Fig.19 As shown, the eNB 1930 may include multiple antennas 1940. For example, the multiple antennas 1940 may be compatible with multiple frequency bands used by the eNB 1930. Fig.19 An example is shown in which the eNB 1930 includes a plurality of antennas 1940 , but the eNB 1930 may also include a single antenna 1940 .

[0227] The base station device 1950 includes a controller 1951, a memory 1952, a network interface 1953, a wireless communication interface 1955, and a connection interface 1957. The controller 1951, the memory 1952, and the network interface 1953 are similar to the reference Fig.18 The controller 1821, memory 1822 and network interface 1823 described are the same.

[0228] The wireless communication interface 1955 supports any cellular communication scheme (such as LTE and LTE-Advanced), and provides wireless communication to a terminal located in a sector corresponding to the RRH 1960 via the RRH 1960 and the antenna 1940. The wireless communication interface 1955 may generally include, for example, a BB processor 1956. In addition to the BB processor 1956 being connected to the RF circuit 1964 of the RRH 1960 via the connection interface 1957, the BB processor 1956 is connected to the reference RF circuit 1964 of the RRH 1960. Fig.18 The same as the BB processor 1826 described above. Fig.19 As shown, the wireless communication interface 1955 may include multiple BB processors 1956. For example, the multiple BB processors 1956 may be compatible with multiple frequency bands used by the eNB 1930. Fig.19 An example is shown in which the wireless communication interface 1955 includes a plurality of BB processors 1956 , but the wireless communication interface 1955 may also include a single BB processor 1956 .

[0229] The connection interface 1957 is an interface for connecting the base station device 1950 (wireless communication interface 1955) to the RRH 1960. The connection interface 1957 may also be a communication module for connecting the base station device 1950 (wireless communication interface 1955) to the RRH 1960 for communication in the above-mentioned high-speed line.

[0230] The RRH 1960 includes a connection interface 1961 and a wireless communication interface 1963 .

[0231] The connection interface 1961 is an interface for connecting the RRH 1960 (wireless communication interface 1963) to the base station device 1950. The connection interface 1961 may also be a communication module for communication in the above-mentioned high-speed line.

[0232] The wireless communication interface 1963 transmits and receives wireless signals via the antenna 1940. The wireless communication interface 1963 may generally include, for example, an RF circuit 1964. The RF circuit 1964 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna 1940. Fig.19 As shown, the wireless communication interface 1963 may include multiple RF circuits 1964. For example, the multiple RF circuits 1964 may support multiple antenna elements. Fig.19 An example is shown in which the wireless communication interface 1963 includes a plurality of RF circuits 1964 , but the wireless communication interface 1963 may also include a single RF circuit 1964 .

[0233] exist Fig.18 and Fig.19 In the eNB 1800 and the eNB 1930 shown, the communication interface in the above electronic devices 600 and 800 may be implemented by the wireless communication interface 1825 and the wireless communication interface 1955 and / or the wireless communication interface 1963. At least part of the functions of the determination unit, the sub-area set determination unit and the base station set determination unit may also be implemented by the controller 1821 and the controller 1951.

[0234] [Application examples on user devices]

[0235] (First application example)

[0236] Fig. 202 is a block diagram showing an example of a schematic configuration of a smartphone 2000 to which the technology of the present disclosure can be applied. The smartphone 2000 includes a processor 2001, a memory 2002, a storage device 2003, an external connection interface 2004, a camera 2006, a sensor 2007, a microphone 2008, an input device 2009, a display device 2010, a speaker 2011, a wireless communication interface 2012, one or more antenna switches 2015, one or more antennas 2016, a bus 2017, a battery 2018, and an auxiliary controller 2019.

[0237] The processor 2001 may be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and other layers of the smartphone 2000. The memory 2002 includes a RAM and a ROM, and stores data and programs executed by the processor 2001. The storage device 2003 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 2004 is an interface for connecting an external device (such as a memory card and a universal serial bus (USB) device) to the smartphone 2000.

[0238] The camera device 2006 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 2007 may include a group of sensors such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 2008 converts the sound input to the smart phone 2000 into an audio signal. The input device 2009 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 2010, and receives an operation or information input from a user. The display device 2010 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 smart phone 2000. The speaker 2011 converts the audio signal output from the smart phone 2000 into sound.

[0239] The wireless communication interface 2012 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface 2012 may generally include, for example, a BB processor 2013 and an RF circuit 2014. The BB processor 2013 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 2014 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 2016. The wireless communication interface 2012 may be a chip module on which the BB processor 2013 and the RF circuit 2014 are integrated. Fig. 20As shown, the wireless communication interface 2012 may include multiple BB processors 2013 and multiple RF circuits 2014. Fig. 20 An example is shown in which the wireless communication interface 2012 includes a plurality of BB processors 2013 and a plurality of RF circuits 2014 , but the wireless communication interface 2012 may also include a single BB processor 2013 or a single RF circuit 2014 .

[0240] In addition, in addition to the cellular communication scheme, the wireless communication interface 2012 can also support other types of wireless communication schemes, such as a device-to-device (D2D) communication scheme, a short-range wireless communication scheme, a near field communication scheme, and a wireless local area network (LAN) scheme. In this case, the wireless communication interface 2012 may include a BB processor 2013 and an RF circuit 2014 for each wireless communication scheme.

[0241] Each of the antenna switches 2015 switches the connection destination of the antenna 2016 between a plurality of circuits (eg, circuits for different wireless communication schemes) included in the wireless communication interface 2012 .

[0242] Each of the antennas 2016 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 2012 to transmit and receive wireless signals. Fig. 20 As shown, the smart phone 2000 may include multiple antennas 2016. Fig. 20 An example is shown in which the smartphone 2000 includes a plurality of antennas 2016 , but the smartphone 2000 may also include a single antenna 2016 .

[0243] In addition, the smartphone 2000 may include an antenna 2016 for each wireless communication scheme. In this case, the antenna switch 2015 may be omitted from the configuration of the smartphone 2000.

[0244] The bus 2017 connects the processor 2001, the memory 2002, the storage device 2003, the external connection interface 2004, the camera 2006, the sensor 2007, the microphone 2008, the input device 2009, the display device 2010, the speaker 2011, the wireless communication interface 2012, and the auxiliary controller 2019 to each other. The battery 2018 is fed to the Fig. 20 The various blocks of the smartphone 2000 shown are supplied with power, with feed lines partially shown as dashed lines in the figure. The auxiliary controller 2019 operates the minimum necessary functions of the smartphone 2000, for example in a sleep mode.

[0245] exist Fig. 20In the illustrated smart phone 2000, the first interface, the second interface and the communication interface in the electronic devices 200 and 1000 can be implemented by the wireless communication interface 2012. At least part of the functions of the measuring unit, the determining unit and the generating unit can also be implemented by the processor 2001 or the auxiliary controller 2019.

[0246] (Second application example)

[0247] Fig.21 2 is a block diagram showing an example of a schematic configuration of a car navigation device 2120 to which the technology of the present disclosure can be applied. The car navigation device 2120 includes a processor 2121, a memory 2122, a global positioning system (GPS) module 2124, a sensor 2125, a data interface 2126, a content player 2127, a storage medium interface 2128, an input device 2129, a display device 2130, a speaker 2131, a wireless communication interface 2133, one or more antenna switches 2136, one or more antennas 2137, and a battery 2138.

[0248] The processor 2121 may be, for example, a CPU or a SoC, and controls a navigation function and other functions of the car navigation device 2120. The memory 2122 includes a RAM and a ROM, and stores data and a program executed by the processor 2121.

[0249] The GPS module 2124 measures the position (such as latitude, longitude and altitude) of the car navigation device 2120 using GPS signals received from GPS satellites. The sensor 2125 may include a group of sensors such as a gyro sensor, a geomagnetic sensor and an air pressure sensor. The data interface 2126 is connected to, for example, the vehicle network 2141 via an unshown terminal and acquires data (such as vehicle speed data) generated by the vehicle.

[0250] The content player 2127 reproduces content stored in a storage medium such as a CD and a DVD, which is inserted into the storage medium interface 2128. The input device 2129 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 2130, and receives an operation or information input from a user. The display device 2130 includes a screen such as an LCD or an OLED display, and displays an image of a navigation function or reproduced content. The speaker 2131 outputs a sound of a navigation function or reproduced content.

[0251] The wireless communication interface 2133 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication. The wireless communication interface 2133 may generally include, for example, a BB processor 2134 and an RF circuit 2135. The BB processor 2134 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 2135 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 2137. The wireless communication interface 2133 may also be a chip module on which the BB processor 2134 and the RF circuit 2135 are integrated. Fig.21 As shown, the wireless communication interface 2133 may include multiple BB processors 2134 and multiple RF circuits 2135. Fig.21 An example is shown in which the wireless communication interface 2133 includes a plurality of BB processors 2134 and a plurality of RF circuits 2135 , but the wireless communication interface 2133 may also include a single BB processor 2134 or a single RF circuit 2135 .

[0252] In addition, in addition to the cellular communication scheme, the wireless communication interface 2133 can also support other types of wireless communication schemes, such as device-to-device (D2D) communication schemes, short-range wireless communication schemes, near field communication schemes, and wireless LAN schemes. In this case, for each wireless communication scheme, the wireless communication interface 2133 can include a BB processor 2134 and an RF circuit 2135.

[0253] Each of the antenna switches 2136 switches a connection destination of the antenna 2137 between a plurality of circuits included in the wireless communication interface 2133 , such as circuits for different wireless communication schemes.

[0254] Each of the antennas 2137 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 2133 to transmit and receive wireless signals. Fig.21 As shown, the car navigation device 2120 may include multiple antennas 2137. Fig.21 An example is shown in which the car navigation device 2120 includes a plurality of antennas 2137 , but the car navigation device 2120 may also include a single antenna 2137 .

[0255] In addition, the car navigation device 2120 may include an antenna 2137 for each wireless communication scheme. In this case, the antenna switch 2136 may be omitted from the configuration of the car navigation device 2120.

[0256] Battery 2138 is fed via a feeder Fig.21The respective blocks of the illustrated car navigation device 2120 are supplied with electric power, and feed lines are partially illustrated as dotted lines in the figure. The battery 2138 accumulates electric power supplied from the vehicle.

[0257] exist Fig.21 In the illustrated car navigation device 2120, the first interface, the second interface and the communication interface in the above electronic devices 200 and 1000 may be implemented by the wireless communication interface 2133. At least part of the functions of the measuring unit, the determining unit and the generating unit may also be implemented by the processor 2121.

[0258] The technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) 2140 including a car navigation device 2120, an in-vehicle network 2141, and one or more blocks in a vehicle module 2142. The vehicle module 2142 generates vehicle data (such as vehicle speed, engine speed, and fault information), and outputs the generated data to the in-vehicle network 2141.

[0259] In addition, the present disclosure may also be configured as follows:

[0260] Solution 1. An electronic device at a user equipment end in wireless communication, the electronic device comprising a processing circuit, wherein the processing circuit is configured to:

[0261] Measuring downlink channel quality of a serving base station and a neighboring base station of the user equipment; and

[0262] determining a first base station set from the serving base station and the neighboring base stations based on the measured downlink channel quality,

[0263] The first base station set represents a base station set that is to broadcast or multicast data information.

[0264] Option 2. An electronic device according to Option 1, wherein the wireless communication includes vehicle communication.

[0265] Solution 3. An electronic device according to Solution 1, wherein the processing circuit is further configured to determine the first base station set based on a change trend and amplitude of the measured downlink channel quality.

[0266] Solution 4. An electronic device according to Solution 3, wherein the processing circuit is further configured to determine the first base station set based on the difference relationship between the first predetermined number of downlink channel qualities with increasing change trends and high amplitude rankings and the influence range of the data information.

[0267] Solution 5. The electronic device according to Solution 4, wherein the processing circuit is further configured to determine the first base station set based on the distances between base stations corresponding to the first predetermined number of downlink channel qualities.

[0268] Solution 6. An electronic device according to Solution 4, wherein the impact range of the data information is related to at least one of the category of the data information and the moving speed of the user device.

[0269] Option 7. An electronic device according to Option 1, wherein the processing circuit is further configured to determine a second set of base stations from the serving base station and the neighboring base stations based on the measured downlink channel quality, and the second set of base stations represents a set of base stations for pre-caching the data information.

[0270] Solution 8. An electronic device according to Solution 7, wherein the processing circuit is further configured to determine a second predetermined number of base stations with increasing downlink channel quality changes and ranked high in amplitude as the second base station set.

[0271] Solution 9. The electronic device according to Solution 1, wherein the processing circuit is further configured to generate a report including the data information and the first base station set to send to the serving base station.

[0272] Solution 10. The electronic device according to any one of Solutions 1 to 9, wherein the electronic device also operates as the user device, and the electronic device further includes:

[0273] The first interface is configured to support cellular communications.

[0274] Solution 11. The electronic device according to Solution 10, wherein the electronic device sends a priority indication indicating the priority of the data information to the serving base station via the first interface.

[0275] Solution 12. The electronic device according to Solution 11, wherein the electronic device further comprises:

[0276] The second interface is configured to support device-to-device communication.

[0277] Solution 13. An electronic device according to Solution 12, wherein the electronic device receives a group identifier sent by the serving base station based on the priority indication via the first interface, and broadcasts the group identifier via the second interface.

[0278] Solution 14. An electronic device according to Solution 1, wherein the downlink channel quality includes one or more of a channel quality indication, a reference signal received power, a reference signal received quality, a received signal strength indication, and a reference signal signal to interference and noise ratio.

[0279] Solution 15. An electronic device at a base station in wireless communication, the electronic device comprising a processing circuit, wherein the processing circuit is configured to:

[0280] determining data information and a first set of base stations according to a report from a user equipment served by the base station, so as to send the data information to each base station in the first set of base stations,

[0281] The first base station set is determined by the user equipment according to the measured downlink channel quality of the base station and neighboring base stations, and represents a base station set for broadcasting or multicasting the data information.

[0282] Scheme 16. An electronic device according to Scheme 15, wherein the processing circuit is further configured to determine a second base station set based on the report to send the data information to each base station in the second base station set, and the second base station set is determined by the user equipment based on the measured downlink channel quality of the base station and the adjacent base stations, and represents a base station set for pre-caching the data information.

[0283] Option 17. An electronic device according to Option 16, wherein the processing circuit is further configured to determine an identifier indicating whether a specific base station belongs to the first base station set or the second base station set based on the report, so as to send the identifier together with the data information to the specific base station.

[0284] Option 18. An electronic device according to Option 17, wherein the processing circuit is further configured to generate an identifier indicating that a base station in the second base station set becomes a base station in the first base station set and send it to the base station.

[0285] Option 19. An electronic device according to Option 15, wherein the processing circuit is further configured to determine a group identifier of the user device to send to the user device based on a priority indication indicating the priority of the data information received from the user device.

[0286] Solution 20. The electronic device according to Solution 19, wherein the processing circuit is further configured to scramble the data information using the group identifier to send the data information to each base station in the first base station set.

[0287] Scheme 21. An electronic device according to Scheme 19, wherein the processing circuit is further configured to send the group identifier and the data information together to each base station in the first base station set, so that each base station in the first base station set uses the group identifier to scramble the data information and then broadcast or multicast it.

[0288] Solution 22. The electronic device according to any one of Solution 15 to Solution 21, wherein the electronic device also operates as the base station, and the electronic device further includes:

[0289] The communication interface is configured to perform transceiver operations.

[0290] Solution 23. An electronic device at a base station in wireless communication, the electronic device comprising a processing circuit, wherein the processing circuit is configured to:

[0291] Determine a first sub-area set according to the sub-area to which the mobile position of the user equipment served by the base station belongs and the influence range of the data information from the user equipment, wherein the sub-area is obtained by dividing the cell coverage range; and

[0292] determining a first base station set according to cells to which each sub-area in the first sub-area set belongs, so as to send the data information to each base station in the first base station set;

[0293] The first base station set represents a base station set that is to broadcast or multicast the data information.

[0294] Solution 24. An electronic device according to Solution 23, wherein the processing circuit is further configured to estimate the mobile position based on the current position information and moving speed reported by the user equipment, thereby determining the sub-area to which the mobile position belongs.

[0295] Scheme 25. An electronic device according to Scheme 23, wherein the processing circuit is further configured to estimate the mobile position based on the downlink channel quality measurement results of the base station and the neighboring base stations reported by the user equipment, thereby determining the sub-area to which the mobile position belongs.

[0296] Scheme 26. An electronic device according to Scheme 25, wherein the processing circuit is further configured to use a triangulation method to estimate the mobile position of the user equipment based on the downlink channel quality measurement result and the distance between base stations, and the downlink channel quality measurement result at least includes the changing trend and amplitude of the downlink channel quality.

[0297] Scheme 27. An electronic device according to Scheme 23, wherein the processing circuit is further configured to determine a second base station set based on the downlink channel quality measurement results of the base station and the neighboring base stations reported by the user equipment, so as to send the data information to each base station in the second base station set, and the second base station set represents a base station set for pre-caching the data information.

[0298] Solution 28. An electronic device according to Solution 27, wherein the processing circuit is further configured to determine a predetermined number of base stations with increasing amplitude rankings and an increasing trend in the change trend of the downlink channel quality measurement results as the second base station set.

[0299] Embodiment 29. An electronic device according to Embodiments 23 to 28, wherein the wireless communication includes vehicle communication.

[0300] Solution 30. The electronic device according to Solution 23 to Solution 28, wherein the electronic device also operates as the base station, and the electronic device further includes:

[0301] The communication interface is configured to perform transceiver operations.

[0302] Solution 31. An electronic device at a user equipment end in wireless communication, the electronic device comprising a processing circuit, wherein the processing circuit is configured to:

[0303] generating a report at least including an influence range of the data information of the user equipment, and sending the report to a serving base station of the user equipment, so that the serving base station determines a first sub-area set according to the sub-area to which the mobile position of the user equipment belongs and the influence range, and determines a first base station set based on the first sub-area set, so as to send the data information to each base station in the first base station set,

[0304] The sub-areas are obtained by dividing the cell coverage area, and the first base station set represents a base station set that is to broadcast or multicast the data information.

[0305] Solution 32. An electronic device according to Solution 31, wherein the report also includes current location information and moving speed of the user equipment so that the serving base station can estimate the moving location.

[0306] Scheme 33. An electronic device according to Scheme 31, wherein the report also includes downlink channel quality measurement results of the user equipment for the serving base station and the neighboring base stations, so that the service estimates the mobile position.

[0307] Solution 34. An electronic device according to Solution 33, wherein the downlink channel quality measurement result includes one or more of a channel quality indication, a reference signal received power, and a reference signal received quality.

[0308] Solution 35. The electronic device according to Solution 31 to Solution 34, wherein the electronic device also operates as the user device, and the electronic device further comprises:

[0309] The communication interface is configured to perform transceiver operations.

[0310] Option 36. An electronic device according to Option 35, wherein the communication interface is configured to support cellular communication and device-to-device communication.

[0311] Option 37. An electronic device according to Option 31, wherein the wireless communication includes vehicle communication.

[0312] Solution 38. A method at a user equipment end in wireless communication, the method comprising:

[0313] Measuring downlink channel quality of a serving base station and a neighboring base station of the user equipment; and

[0314] determining a first base station set from the serving base station and the neighboring base stations based on the measured downlink channel quality,

[0315] The first base station set represents a base station set that is to broadcast or multicast the data information.

[0316] Solution 39. A method at a base station in wireless communication, the method comprising:

[0317] determining data information and a first base station set according to a report from a user equipment served by the base station, so as to send the data information to each base station in the first base station set,

[0318] The first base station set is determined by the user equipment according to the measured downlink channel quality of the base station and neighboring base stations, and represents a base station set for broadcasting or multicasting the data information.

[0319] Solution 40. A method at a base station in wireless communication, the method comprising:

[0320] Determine a first sub-area set according to the sub-area to which the mobile position of the user equipment served by the base station belongs and the influence range of the data information from the user equipment, wherein the sub-area is obtained by dividing the cell coverage range; and

[0321] determining a first base station set according to cells to which each sub-area in the first sub-area set belongs, so as to send the data information to each base station in the first base station set;

[0322] The first base station set represents a base station set that is to broadcast or multicast the data information.

[0323] Solution 41. A method at a user equipment end in wireless communication, the method comprising:

[0324] generating a report at least including an influence range of the data information of the user equipment, and sending the report to a serving base station of the user equipment, so that the serving base station determines a first sub-area set according to the sub-area to which the mobile position of the user equipment belongs and the influence range, and determines a first base station set based on the first sub-area set, so as to send the data information to each base station in the first base station set,

[0325] The sub-areas are obtained by dividing the cell coverage area, and the first base station set represents a base station set that is to broadcast or multicast the data information.

[0326] The preferred embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is certainly not limited to the above examples. 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 will naturally fall within the technical scope of the present disclosure.

[0327] For example, a plurality of functions included in one unit in the above embodiments may be implemented by separate devices. Alternatively, a plurality of functions implemented by a plurality of units in the above embodiments may be implemented by separate devices, respectively. In addition, one of the above functions may be implemented by a plurality of units. Needless to say, such a configuration is included in the technical scope of the present disclosure.

[0328] In this specification, the steps described in the flowchart include not only the processing performed in time series in the order described, but also the processing performed in parallel or individually rather than necessarily in time series. In addition, even in the steps processed in time series, it goes without saying that the order can be appropriately changed.

[0329] Although the present disclosure and its advantages have been described in detail, it should be understood that various changes, substitutions and transformations can be made without departing from the spirit and scope of the present disclosure as defined by the appended claims. Moreover, the terms "including", "comprising" or any other variants of the embodiments of the present disclosure are intended to cover non-exclusive inclusions, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "including one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

Claims

1. An electronic device at a node end in wireless communication, the electronic device comprising a processing circuit, wherein the processing circuit is configured to: A first sub-area set is determined according to the sub-area to which the mobile location of the user equipment served by the node belongs and the influence range of the information of the user equipment, wherein: The sub-areas are obtained by dividing the node coverage area; as well as Determine a first node set according to the nodes to which each sub-region in the first sub-region set belongs, so as to send the information to each node in the first node set, The first node set represents a node set that is to broadcast or multicast the information.

2. The electronic device according to claim 1, wherein: The processing circuit is further configured to estimate the mobile position according to the current position information and the moving speed reported by the user equipment, so as to determine the sub-area to which the mobile position belongs.

3. The electronic device according to claim 1, wherein: The processing circuit is further configured to estimate the mobile position according to the downlink channel quality measurement results for the node and the neighboring nodes reported by the user equipment, so as to determine the sub-area to which the mobile position belongs.

4. The electronic device according to claim 3, wherein: The processing circuit is further configured to estimate the mobile position of the user equipment according to the downlink channel quality measurement result and the distance between nodes by using a triangulation method, wherein the downlink channel quality measurement result at least includes a change trend and amplitude of downlink channel quality.

5. The electronic device according to claim 1, wherein: The processing circuit is further configured to determine a second set of nodes based on downlink channel quality measurement results for the node and neighboring nodes reported by the user equipment, so as to send the information to each node in the second set of nodes, and the second set of nodes represents a set of nodes for pre-caching the information.

6. The electronic device according to claim 5, wherein: The processing circuit is further configured to determine a predetermined number of nodes with increasing change trends in the downlink channel quality measurement results and with higher magnitude rankings as the second node set.

7. The electronic device according to any one of claims 1 to 6, wherein: The wireless communications include vehicular communications.

8. The electronic device according to any one of claims 1 to 6, wherein: The electronic device also operates as the node, and the electronic device further includes: The communication interface is configured to perform transceiver operations.

9. An electronic device at a user equipment end in wireless communication, the electronic device comprising a processing circuit, the processing circuit being configured to: generating a report of the influence range including at least information of the user equipment, so as to send the report to the service node of the user equipment, so that the service node determines a first sub-area set according to the sub-area to which the mobile position of the user equipment belongs and the influence range, and determines a first node set based on the first sub-area set, so as to send the information to each node in the first node set, in, The sub-areas are obtained by dividing the node coverage area, and the first node set represents a node set that is to broadcast or multicast the information.

10. The electronic device according to claim 9, wherein: The report also includes the current location information and moving speed of the user equipment, so that the service node can estimate the moving location.

11. The electronic device according to claim 9, wherein: The report also includes downlink channel quality measurement results of the user equipment on the service node and neighboring nodes, so that the service estimates the mobile position.

12. The electronic device according to claim 11, wherein: The downlink channel quality measurement result includes one or more of a channel quality indicator, a reference signal received power, and a reference signal received quality.

13. The electronic device according to any one of claims 9 to 12, wherein: The electronic device also operates as the user device, and the electronic device further includes: The communication interface is configured to perform transceiver operations.

14. The electronic device according to claim 13, wherein: The communication interface is configured to support cellular communications and device-to-device communications.

15. The electronic device according to claim 9, wherein: The wireless communications include vehicular communications.

16. A method for a node in wireless communication, the method comprising: Determine a first sub-area set according to the sub-area to which the mobile position of the user equipment served by the node belongs and the influence range of the information of the user equipment, wherein the sub-area is obtained by dividing the coverage range of the node; and Determine a first node set according to the nodes to which each sub-region in the first sub-region set belongs, so as to send the information to each node in the first node set, The first node set represents a node set that is to broadcast or multicast the information.

17. A method for a user equipment in wireless communication, the method comprising: generating a report of the influence range including at least information of the user equipment, so as to send the report to the service node of the user equipment, so that the service node determines a first sub-area set according to the sub-area to which the mobile position of the user equipment belongs and the influence range, and determines a first node set based on the first sub-area set, so as to send the information to each node in the first node set, The sub-areas are obtained by dividing the node coverage area, and the first node set represents a node set that is to broadcast or multicast the information.

18. A computer-readable storage medium storing a program, wherein when the program is executed on a computer, the computer is caused to perform the following operations: A first sub-area set is determined according to the sub-area to which the mobile location of the user equipment served by the node belongs and the influence range of the information of the user equipment, wherein: The sub-areas are obtained by dividing the node coverage area; as well as Determine a first node set according to the nodes to which each sub-region in the first sub-region set belongs, so as to send the information to each node in the first node set, The first node set represents a node set that is to broadcast or multicast the information.

19. A computer-readable storage medium storing a program, wherein when the program is executed on a computer, the computer is caused to perform the following operations: generating a report of the influence range including at least information of the user equipment, so as to send the report to the service node of the user equipment, so that the service node determines a first sub-area set according to the sub-area to which the mobile position of the user equipment belongs and the influence range, and determines a first node set based on the first sub-area set, so as to send the information to each node in the first node set, in, The sub-areas are obtained by dividing the node coverage area, and the first node set represents a node set that is to broadcast or multicast the information.

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