Electronic device, wireless communication method, and computer readable medium

Abstract

The present disclosure relates to an electronic device, a wireless communication method, and a computer-readable medium. According to one embodiment, an electronic device for wireless communication includes a processing circuit, which is configured to control to send or receive a reference signal for a direct link to another user equipment or from another user equipment. The processing circuit is also configured to control to perform beamforming-based direct link communication with the other user equipment. At least one of the transmit beam and the receive beam for the direct link communication is determined based on a measurement of the reference signal.

Description

Technical Field

[0001] The present disclosure generally relates to the field of wireless communications, and more particularly, to an electronic device and a wireless communication method for wireless communications, and a computer-readable medium. Background Art

[0002] Communications in high frequency bands (eg, bands greater than 6 GHz) will result in greater path loss and greater phase noise, and therefore beamforming is required.

[0003] Unlike omnidirectional reception, beamforming-based communication requires the selection of a transmit (Tx) beam or a receive (Rx) beam. In addition, beam alignment can be performed to further improve the signal-to-noise ratio and avoid interference. Summary of the invention

[0004] A brief summary of embodiments of the present invention is provided below to provide a basic understanding of certain aspects of the present invention. It should be understood that the following summary is not an exhaustive summary of the present invention. It is not intended to identify key or important parts of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is merely to provide certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0005] According to one embodiment, an electronic device for wireless communication is provided, comprising a processing circuit. The processing circuit is configured to control to send or receive a reference signal for a direct link to another user equipment or from another user equipment. The processing circuit is also configured to control to perform direct link communication based on beamforming with the other user equipment. At least one of the transmit beam and the receive beam for the direct link communication is determined based on a measurement of the reference signal.

[0006] According to another embodiment, a wireless communication method is provided, which includes the step of sending or receiving a reference signal for a direct link to another user equipment or from another user equipment. The method also includes the step of performing direct link communication based on beamforming with the other user equipment. At least one of the transmit beam and the receive beam used for the direct link communication is determined based on the measurement of the reference signal.

[0007] According to yet another embodiment, an electronic device for wireless communication is provided, comprising a processing circuit configured to allocate communication resources for sending a reference signal for determining at least one of a transmit beam and a receive beam for beamforming-based direct link communication between user equipments.

[0008] According to yet another embodiment, a wireless communication method is provided, comprising the step of allocating communication resources for transmitting a reference signal, wherein the reference signal is used to determine at least one of a transmit beam and a receive beam for beamforming-based direct link communication between user equipments.

[0009] The embodiment of the present invention also includes a computer-readable medium, which includes executable instructions. When the executable instructions are executed by an information processing device, the information processing device executes the method according to the above embodiment.

[0010] The embodiments of the present invention can improve the reliability and stability of direct link communication based on beamforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention may be better understood by referring to the following description given 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 this specification and are used to further illustrate the preferred embodiments of the present invention and to explain the principles and advantages of the present invention. In the drawings:

[0012] Figure 1 is a block diagram showing a configuration example of an electronic device for a user equipment side according to an embodiment of the present invention;

[0013] Figure 2 is a block diagram showing a configuration example of an electronic device for a user equipment side according to another embodiment;

[0014] Figure 3 is a block diagram showing a configuration example of an electronic device for a user equipment side according to yet another embodiment;

[0015] Figure 4 is a block diagram showing a configuration example of an electronic device for a user equipment side according to still another embodiment;

[0016] Figure 5 is a block diagram showing a configuration example of an electronic device for a user equipment side according to yet another embodiment;

[0017] Figure 6 is a block diagram showing a configuration example of an electronic device for a user equipment side according to still another embodiment;

[0018] Figure 7 is a flowchart showing an example of a process of a wireless communication method for a user equipment side according to an embodiment of the present invention;

[0019] Figure 8is a block diagram showing a configuration example of an electronic device for a base station side according to one embodiment of the present invention;

[0020] Fig. 9 is a block diagram showing a configuration example of an electronic device for a base station side according to another embodiment;

[0021] Fig.10 is a flowchart showing an example of a process of a wireless communication method for a base station side according to an embodiment of the present invention;

[0022] Fig.11 is a block diagram showing an exemplary structure of a computer implementing the method and apparatus of the present disclosure;

[0023] Fig.12 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;

[0024] Fig.13 is a block diagram showing an example of a schematic configuration of a gNB (a base station in a 5G system) to which the technology of the present disclosure can be applied;

[0025] Fig.14 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;

[0026] Fig.15 is a schematic diagram showing an example of a beam configuration;

[0027] Fig.16 is a signaling flow diagram for illustrating an example process of position-based beamforming;

[0028] Fig.17 is a signaling flow chart for illustrating an example process for determining and configuring a beam management approach;

[0029] Figures 18 to 20 is a signaling flow chart for illustrating an example process for configuring relevant parameters and resources for beam measurement;

[0030] Figure 21 to Figure 26 is a signaling flow chart for illustrating an example process of beam determination;

[0031] Figures 27 to 30 is a signaling flow chart for illustrating an example process of beam tracking;

[0032] Figure 31 to Figure 35 It is a signaling flow chart used to illustrate the beam recovery mechanism. DETAILED DESCRIPTION

[0033] Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that for the purpose of clarity, the representation and description of components and processes that are not related to the present invention and are known to those of ordinary skill in the art are omitted in the drawings and descriptions.

[0034] like Figure 1 As shown, the electronic device 100 for the user equipment side according to this embodiment includes a processing circuit 110. The processing circuit 110 can be implemented as a specific chip, a chipset or a central processing unit (CPU), etc.

[0035] According to one embodiment, the user equipment may include a vehicle. Although a vehicle may be used as an example of a user equipment in the following description of the exemplary embodiment, the present invention is not limited thereto, but may be used in various application scenarios of a new radio (NR) direct link (Sidelink), such as machine type communication (MTC), device to device (D2D) communication, vehicle to other devices (V2X) communication, Internet of Things (IOT) communication, etc., wherein V2X communication may include vehicle to vehicle (V2V) communication, vehicle to pedestrian (V2P) communication, and vehicle to infrastructure (V2I) communication, etc.

[0036] The processing circuit 110 includes a transceiver control unit 111 and a communication control unit 113. It should be noted that although the transceiver control unit 111 and the communication control unit 113 are shown in the form of functional blocks in the drawings, it should be understood that the functions of these units can also be implemented by the processing circuit 110 as a whole, and not necessarily by discrete actual components in the processing circuit 110. In addition, although the processing circuit 110 is shown as a block in the figure, the electronic device 100 may include multiple processing circuits, and the functions of the transceiver control unit 111 and the communication control unit 113 may be distributed to multiple processing circuits so that the multiple processing circuits cooperate to perform these functions.

[0037] The transceiver control unit 111 is configured to control to send or receive a reference signal for a direct link to another user equipment.

[0038] The communication control unit 113 is configured to control to perform beamforming-based direct link communication with the other user equipment, and at least one of the transmit beam and the receive beam used for the direct link communication is determined based on the measurement of the reference signal.

[0039] There are two main resource allocation methods for direct link communication, one is base station scheduling (Mode 3), and the other is user equipment (UE) autonomous selection (Mode 4). Next, the triggering method of direct link communication based on beamforming is briefly described in combination with different resource allocation methods.

[0040] In the case of Mode 3, the direct link communication based on beamforming can be determined by a base station such as a gNB, or can be determined by the sender. In the case of Mode 4, the direct link communication based on beamforming can be determined by the sender or the receiver.

[0041] More specifically, the triggering conditions for beamforming-based direct link communication may include, for example, business requirements (such as delay, data rate, bandwidth or priority, etc.) requiring communication to be carried out in a frequency band greater than 6 GHz, for example, and the communication range or communication quality (such as path loss and estimated signal-to-noise ratio (SNR)) at this time in the high frequency band cannot meet the business requirements.

[0042] In addition, if the UE, such as a vehicle, is configured by the base station or its chip is pre-configured to communicate using the beamforming technology in the high frequency band, direct link communication based on beamforming will occur.

[0043] Next, the reference signal for the direct link is described. According to one embodiment, a direct link reference signal (also referred to as SL-BMRS in this article) dedicated to beam management can be set. In addition, when the UE is within the coverage of the base station, the channel sounding reference signal (Sounding Reference Signal, SRS) can be multiplexed as a beam measurement reference signal for the direct link. In addition, in the case where one of the sender and the receiver is used as a synchronization reference, a direct link synchronization signal (Sidelink Synchronization signal, SLSS) can also be used as a beam measurement reference signal.

[0044] Accordingly, according to one embodiment, the reference signal for the direct link includes a channel sounding reference signal, a direct link synchronization signal, or a direct link beam management reference signal SL-BMRS.

[0045] Next, an example method of multiplexing SRS or SLSS as a beam measurement reference signal is described.

[0046] Multiplexing SRS: When the vehicle is within the coverage of the base station, the set of subframe numbers that can be used to send SRS in a cell is configured through the system information block SIB 2 (for example, through the srs-SubframeConfig field of SoundingRS-UL-ConfigCommon). At the same time, each vehicle can be configured with its specific SRS resource set by the higher layer through the parameter SRS-ResourceSetConfig. In each resource set, the higher layer can configure K≥1 SRS resources for the vehicle through the parameter SRS-ResourceConfig, and the maximum value of K can be indicated by SRS_capability. When SRS can be multiplexed as a direct link beam measurement reference signal, the higher layer can set the parameter SRS-SetUse to "SL-BeamManagement". At this time, in each SRS resource set, only one SRS resource can be transmitted at the same time. When beam scanning of multiple beams is performed, SRS resources in different SRS resource sets can be used for simultaneous transmission.

[0047] Multiplexing SLSS: In the Mode 4 scenario, when the sender or receiver is a synchronous reference vehicle, SLSS can be used for beam measurement, but its priority can be set lower than SL-BMRS, and the beam measurement configuration method can be the same as SL-BMRS.

[0048] In addition, according to one embodiment, the transceiver control unit 111 is configured to control to send multiple reference signals corresponding to multiple beams respectively to another user equipment on multiple beams. For example, the information can be sent or received via a physical direct link control channel (PSCCH).

[0049] Specifically, the reference signal SL-BMRS is unique to each vehicle, and each beam can have its own beam ID and corresponding SL-BMRS, as well as the resource location occupied by the SL-BMRS. If the receiver needs to measure the transmitted beam, the measurement information of each beam can be configured to the receiver first, including the type of beam measurement reference signal, the ID identifying the beam, the time-frequency resource location of the corresponding measurement reference signal SL-BMRS, etc.

[0050] Accordingly, according to one embodiment, the transceiver control unit 111 is configured to control the sending or receiving of information such as the type of reference signal (SL-BMRS / SLSS / SRS), the time-frequency resource location of the reference signal, and the beam identifier corresponding to the reference signal to another user equipment.

[0051] Table 1 shows an example of measurement information of a beam.

[0052] Table 1:

[0053]

[0054] Fig.15 An example of a beam configuration is shown, where each beam has a respective identity and can be individually configured with a reference signal.

[0055] In addition, according to one embodiment, location-based beamforming can be used in a direct link. Accordingly, the transceiver control unit 111 can be configured to control to obtain the location information of another user device and / or provide the location information of the current user device to another user device, and the determination of at least one of the transmit beam and the receive beam for direct link communication is also based on the location information. The location information may, for example, include but is not limited to longitude and latitude, orientation and speed. In addition, in one embodiment, the determination of at least one of the transmit beam and the receive beam for direct link communication can be based only on the location information, rather than on the reference signal for the direct link described in the aforementioned embodiment. In other words, the implementation method of beam determination based on location information can be combined with the implementation method of beam determination based on reference signals, or can be implemented independently of each other. For example, in the case of beam determination based on location information, by directly exchanging location information between the sender and the receiver, the sender can select the transmit beam based on the receiver's location information, and the receiver can also select the receive beam based on the sender's location information.

[0056] Taking V2X application scenarios as an example, location information may include vehicle orientation, latitude and longitude, and speed. Vehicles can obtain their own location information through positioning technologies such as the Global Positioning System (GPS), and send the location information to the communication object through a direct link or through the network (for example, through gNB or roadside unit (RSU)).

[0057] For example, in a Mode 4 scenario, a vehicle can periodically broadcast its location information and vehicle identification to the surrounding area, so that the communicating vehicles can each send their location information and vehicle identification on the broadcast channel.

[0058] Accordingly, according to one embodiment, the transceiver control unit 111 may be configured to perform control to broadcast the location information of the current user equipment and / or receive the location information broadcasted by another user equipment.

[0059] In the Mode 3 scenario, in addition to receiving broadcast location information, when a vehicle applies for direct link resources from a base station, it can also apply for the receiver's location information.

[0060] Fig.16An example process of position-based beamforming is shown. First, the sender and the receiver share their positions. Then, the sender can perform beamforming based on the position information and send a beamforming signal to the receiver.

[0061] In addition, beam management can be performed in different ways. Figure 2 As shown, according to one embodiment, the electronic device 200 for the user equipment side includes a processing circuit 210. The processing circuit 210 includes a transceiver control unit 211, a communication control unit 213 and a determination unit 215. The configurations of the transceiver control unit 211 and the communication control unit 213 are respectively the same as those described above with reference to Figure 1 The transceiver control unit 111 and the communication control unit 113 are similar.

[0062] The determining unit 215 is configured to determine a beam management method for direct link communication.

[0063] For example, the beam management method may include: a first method in which both the transmit beam and the receive beam are determined based on the measurement of the reference signal; and a second method in which only one of the transmit beam and the receive beam is determined based on the measurement of the reference signal.

[0064] The communication control unit 213 controls the direct link communication with the other user equipment based on the determined beam management mode.

[0065] According to an embodiment, the determination unit 215 may determine the beam management mode based on the stability of the through link.

[0066] In the following description of example embodiments, the first method may also be referred to as a "beam management method based on feedback", and the second method may also be referred to as a "beam management method without feedback".

[0067] Still taking the V2X application scenario as an example, under the following conditions, it can be determined that the beam management method without feedback is adopted:

[0068] The vehicles have the same driving routes and their relative positions and speeds are relatively stable;

[0069] The sender records the communication beam pair link (BPL) between the sender and the receiver in the previously predetermined period of time. When the proportion of beams with good quality (for example, the reference signal received power (RSRP) is greater than a predetermined threshold) is greater than a predetermined threshold (this parameter can be defined as parameter A. When its value is greater than a certain threshold, the sender believes that the transmission path between the two is good, for example, there is no obstruction and little interference), feedback-free beam management can be performed; or

[0070] The vehicle is engaged in other higher priority operations and cannot send or receive feedback.

[0071] In addition, the transceiver control unit 211 may also be configured to control the sending of indication information about the beam management method to another user equipment.

[0072] Fig.17 An example process for determining and configuring a beam management approach is shown.

[0073] like Fig.17 As shown, first, the sender and the receiver share positions. It should be noted that this step is optional, for example, when the beam management method is determined based on the aforementioned conditions that are unrelated to the position information, position sharing is not required.

[0074] Next, the sender determines the beam management mode. However, the present invention is not limited to this, and the beam management mode can also be determined by the receiver or by the network side (such as gNB or RSU).

[0075] Then, the sender sends an indication message (FBConfIndicator) of the beam management mode to the receiver, so that the receiver can check its operation configuration according to the indication message.

[0076] For example, the indication information may be composed of two bits of information. Table 2 gives an example of the meaning corresponding to the indication information.

[0077] Table 2:

[0078]

[0079] Next, an example method of configuring relevant parameters and resources for beam measurement is described.

[0080] According to one embodiment, the reference signal for the direct link is sent using resources allocated by the base station. For example, the resources may be allocated through radio resource control (RRC) signaling.

[0081] Fig.18 An example process of measurement configuration in the case of Mode 3 is shown.

[0082] like Fig.18 As shown, in step 1, the sender requests direct link resources from the base station. Next, in step 2, the base station can allocate resources for SL-BMRS / SRS through RRC signaling and inform the sender of the time-frequency resource location information.

[0083] In addition, in step 3, the base station can configure the receiver to perform beam measurement through RRC signaling, and then determine the best transmit beam. The configuration content may include, for example, the type of beam measurement reference signal of the transmit beam, its time-frequency resource location, and the correspondence with the beam ID. In addition, if it is based on feedback beam management, the step of reporting the results after the measurement can also be configured, for example, the time-frequency resources required for reporting the measurement results on the PSCCH channel in the frequency band <6GHz can be configured.

[0084] Accordingly, for the receiving side, that is, when the transceiver control unit 111 is configured to perform control to receive a reference signal for a direct link from another user equipment, according to one embodiment, the transceiver control unit 111 can also be configured to perform control to receive the following information sent by the base station: the type of reference signal, the time-frequency resource location of the reference signal, and the beam identifier corresponding to the reference signal.

[0085] Fig.19 and Fig. 20 An example process of measurement configuration in the case of Mode 4 is shown. Fig.19 Corresponding to the case where the transmitter sends a beam measurement reference signal for beam determination, Fig. 20 This corresponds to the situation where the receiving party sends a beam measurement reference signal for beam determination.

[0086] like Fig.19 As shown, the sender configures the beam measurement information to the receiver on the PSCCH (<6GHz) through dedicated signaling, which may include the type of measurement reference signal (SL-BMRS / SLSS), the resource location occupied by the beam measurement reference signal, and the corresponding beam ID. If a feedback-based beam management method is adopted, the step of reporting the result after the measurement can also be configured, that is, when to report after the measurement.

[0087] like Fig. 20 As shown, the receiver configures the beam measurement information to the sender on the PSCCH (<6GHz) through dedicated signaling, which may include the type of measurement reference signal (SL-BMRS / SLSS), the resource location occupied by the beam measurement reference signal, and the corresponding beam ID. If a feedback-based beam management method is adopted, the step of reporting the result after the measurement can also be configured, that is, when to report after the measurement.

[0088] Next, an example of a beam determination process is described. Figure 2 A configuration of an electronic device according to an exemplary embodiment is explained.

[0089] like Figure 2As shown, according to one embodiment, the electronic device 200 for the user equipment side includes a processing circuit 210. The processing circuit 210 includes a transceiver control unit 211, a communication control unit 213 and a determination unit 215. The configuration of the communication control unit 213 is respectively the same as that of the above reference Figure 1 The communication control unit 113 described above is similar.

[0090] The transceiver control unit 211 is configured to control the reference signal to be sent to the other user equipment. In other words, this embodiment corresponds to the user equipment of the sender.

[0091] In addition, the transceiver control unit 211 is further configured to control the reception of feedback information sent by the other user equipment based on the measurement of the reference signal.

[0092] The determination unit 215 is configured to determine a transmit beam for direct link communication based on the feedback information.

[0093] Fig.21 An example process of feedback-based beam determination in Mode 3 is shown.

[0094] like Fig.21 As shown, the sender sends a direct link reference signal to the receiver. In addition, the base station authorizes the sender to grant a direct link.

[0095] After the base station is configured, the receiver measures the reference signal corresponding to the transmit beam and reports the measurement result (such as RSRP) and the corresponding beam ID of each beam to the sender. Thus, the sender can determine the transmit beam based on the feedback information of the receiver and perform direct link transmission.

[0096] also, Fig.24 An example process of feedback-based beam determination in Mode 4 is shown.

[0097] like Fig.24 As shown, in step 1, the transmitter selects a resource for sending a beam measurement reference signal from a resource pool preconfigured (eg, by a base station). When the transmitter is used as a synchronization reference, the SLSS may also be sent as a beam measurement reference signal for beam determination.

[0098] In step 2, the receiver measures the reference signal.

[0099] In step 3, the receiver reports the measurement result RSRP and the corresponding beam ID of each beam in the PSCCH resource pool pre-configured (eg, by the base station) (eg, <6 GHz) to the sender.

[0100] In step 4, the sender sends a beam indication to the receiver on the PSCCH (<6 GHz), which contains the ID of the transmit beam selected according to the beam measurement result reported by the receiver. In addition, direct link control information (SCI) associated with data transmission can also be sent to the receiver (for example, via a frequency band >6 GHz) to indicate transmission information.

[0101] Accordingly, according to one embodiment, the transceiver control unit 211 may also be configured to perform control to notify another user equipment (receiver) of the transmit beam determined by the determination unit 215 .

[0102] Next, an exemplary embodiment of a beam management method without feedback is described.

[0103] Fig. 22 An example process of beam determination without feedback in Mode 3 is shown.

[0104] and Fig.21 The example process shown is different, such as Fig. 22 As shown, after the base station is configured, the receiver performs RSRP measurement on the transmit beam and performs beam scanning on the receive beam (such as Fig.23 As shown), the best receiving beam is selected to form the best beam pair link with the transmitting beam.

[0105] In addition, the embodiment of the present invention also includes an electronic device on the user equipment side corresponding to the receiving end. Figure 3 As shown, the electronic device 300 according to this embodiment includes a processing circuit 310. The processing circuit 310 includes a transceiver control unit 311, a communication control unit 313, a measurement control unit 315, and a determination unit 317. The communication control unit 313 is similar to the communication control unit 113 described in the previous embodiment.

[0106] The transceiver control unit 311 is configured to control to receive a reference signal for a direct link from another user equipment (transmitter).

[0107] The measurement control unit 315 is configured to perform control to measure a reference signal.

[0108] The determination unit 317 is configured to determine a reception beam for a direct link based on beamforming based on measurement of a reference signal.

[0109] It should be noted that this embodiment is not limited to the aforementioned feedback-based beam management method or the feedback-free beam management method. In other words, regardless of whether the receiver feeds back the measurement result of the reference signal to the transmitter, the receiver can determine the receiving beam based on the measurement of the reference signal.

[0110] In addition, in one embodiment, when a beam management method without feedback is adopted, the determination in the receiving beam can be based only on the position information, rather than on the reference signal for the direct link. For example, the receiving party can select the receiving beam based on the position information of the sending party.

[0111] Corresponding to the feedback-based beam management method, according to one embodiment, the transceiver control unit 311 may also be configured to send feedback information to another user equipment (sender) based on the measurement of the reference signal.

[0112] In addition, when adopting a beam management method without feedback, the sender can determine the transmission beam used for direct link communication based on the location information of another user equipment (receiver), and can send a reference signal for the direct link on the determined transmission beam.

[0113] Fig.25 and Fig.26 An example process of performing beam determination using a beam management method without feedback in Mode 4 is shown. Fig.25 Corresponding to the situation when the sender is used as a synchronization reference, Fig.26 This corresponds to the situation when the receiver is used as a synchronization reference.

[0114] like Fig.25 As shown, when the sender is a synchronization reference, in step 1, the sender can send SLSS as a beam measurement reference signal. In step 2, the receiver selects a receiving beam based on the measurement of the reference signal. In step 3, the sender sends SCI to the receiver, and in step 4, a direct link transmission is performed.

[0115] like Fig.26 As shown, when the receiver is a synchronization reference, in step 1, the receiver can send SLSS to the sender as a beam measurement reference signal, which can be sent using resources in a resource pool preconfigured by the base station, for example.

[0116] In step 2, after receiving the SLSS sent by the receiver, the sender can perform RSRP measurement based on the SLSS, perform transmit beam scanning and utilize channel reciprocity to select the best beam pair link.

[0117] In step 3, the sender may send an SCI to the receiver to indicate the information of data transmission, and may also send a beam indication signal to indicate the beam ID of the receiving beam.

[0118] In step 4, both parties use corresponding beams for direct link transmission.

[0119] After beam determination is performed in the aforementioned exemplary manner and direct link transmission is performed based on the determined beam, beam tracking processing may also be performed.

[0120] Specifically, the receiver can measure and monitor each beam pair link between the sender and the receiver, that is, the sender can periodically send reference signals for beam measurement on all transmit beams (including transmit beams selected for transmission) to perform beam tracking.

[0121] In Mode 3, the base station may configure the receiver, for example, through RRC signaling, and an example process is as follows: Fig. 27 In Mode 4, the sender can configure the receiver on the resources in the pre-configured resource pool through dedicated control signaling. The example process is as follows: Fig.28 shown.

[0122] The beam tracking configuration sent by the base station or by the transmitter to the receiver may include, for example, the contents listed in Table 3 below.

[0123] Table 3:

[0124]

[0125] Fig.29 An example process for feedback-based beam tracking is shown.

[0126] In step 1, the transmitter periodically transmits a measurement reference signal for each possible transmit beam (which may be determined by the geographical location, for example) on the (pre-)configured resources of the base station for beam tracking.

[0127] In step 2, the receiver measures the reference signal and in step 3 feeds back a beam report to the transmitter.

[0128] In step 4, after receiving the measurement result, the sender determines whether to adjust the beam, for example, based on the volatility / distribution state of the measurement result (related to the beam failure threshold). For example, if the quality of the beam pair link fluctuates frequently around the threshold, the beam needs to be adjusted to be wider to make it easier to track.

[0129] In step 5, the receiving party determines whether a beam failure occurs. The triggering conditions of beam failure may include, for example:

[0130] 1. During beam tracking, based on the RSRP of the measured reference signal <Th RSRP

[0131] 2. Duration of condition 1 > Th Time (The threshold value may vary according to the different delay requirements of different services).

[0132] In the event of beam failure, beam recovery processing can be performed in step 6.

[0133] Taking V2X applications as an example, the reasons and triggering conditions for the failure of the through link beam may include: the high-speed mobility of vehicles causes misaligned beams, the relative position of vehicles changes too much, new vehicles are inserted between vehicles, the situation between the sender and the receiver changes from line-of-sight to non-line-of-sight, and the resource pool corresponding to the beam has a resource conflict, etc. Different beam failure solutions can be adopted for different triggering reasons. For example, in the case of a new vehicle being inserted, the newly inserted vehicle can be used as a relay without changing the beam direction. In the case of line-of-sight changing to non-line-of-sight, surrounding vehicles can be used as relays or roadside equipment can be used as relays to assist in communication.

[0134] Fig.30 An example process of beam tracking without feedback is shown.

[0135] In step 1, the sender adjusts the transmit beam according to the location information during the transmission process.

[0136] In step 2, the transmitter periodically sends a measurement reference signal for each possible transmit beam (determined by the geographic location) on the (pre-)configured resources of the base station for beam tracking.

[0137] In step 3, the receiver measures the reference signal.

[0138] In step 4, the receiving side determines whether beam failure occurs.

[0139] In the event of beam failure, beam recovery processing can be performed in step 5.

[0140] Next, the configuration of an electronic device related to an example embodiment of beam tracking is described. Figure 4 As shown, the electronic device 400 according to this embodiment includes a processing circuit 410. The processing circuit 410 includes a transceiver control unit 411 and a communication control unit 413, which are similar to the transceiver control unit 111 and the communication control unit 113 described in the previous embodiment.

[0141] In addition, in order to perform beam tracking, the transceiver control unit 411 is further configured to control to periodically send multiple reference signals corresponding to the multiple beams to another user equipment on the multiple beams.

[0142] According to one embodiment, the processing circuit 410 may further include an adjustment unit 415. The transceiver control unit 411 is further configured to control to receive feedback information of another user equipment for the reference signal periodically sent. The adjustment unit 415 is configured to perform beam adjustment based on the feedback information. For example, the beam adjustment may include increasing the beam width.

[0143] Figure 5FIG. 2 shows a configuration of an electronic device corresponding to a receiving side and related to an example embodiment of beam tracking. Figure 5 As shown, the electronic device 500 according to this embodiment includes a processing circuit 510. The processing circuit 510 includes a transceiver control unit 511, a communication control unit 513, and a measurement control unit 515. The transceiver control unit 511 and the communication control unit 513 are similar in configuration to the corresponding units described above.

[0144] The measurement control unit 515 is configured to control to measure a plurality of reference signals respectively corresponding to a plurality of beams and periodically transmitted on a plurality of beams by another user equipment (transmitter).

[0145] Next, an example method of beam recovery processing is described.

[0146] Fig.31 An example process for feedback-based beam failure recovery is shown.

[0147] In step 1, the transmitter and receiver perform beam tracking.

[0148] When the receiver determines that a beam failure occurs ("Yes" in step 2), in step 3, the receiver may first enter a self-repair process, that is, the receiver may re-scan all receiving beams, and if there is an available receiving beam, select the beam to form a new beam pair link; if all receiving beams are unavailable, a request is sent to the sender (step 5) for beam recovery.

[0149] The resource for the receiver to report the beam failure request and the sender to respond can be a PSCCH resource (<6GHz). In Mode 3, the resource can be configured by the base station through RRC signaling. In Mode 4, the vehicle can autonomously select the resource for sending the beam failure recovery request and response from the pre-configured resource pool.

[0150] In step 6, after sending the failure recovery request, the receiver can monitor the response of the sender. If no response is heard within the monitoring window (which can be pre-configured and related to the service delay requirement), the request can be resent. When the number of times the request is sent exceeds a threshold (which can be pre-configured and related to the service delay requirement), the receiver can stop monitoring, abandon the current communication, and look for other communication partners.

[0151] In step 7, the sender may explicitly or implicitly inform the receiver of its selected beam failure recovery mechanism in the failure recovery response. The basis for its selection and the method of notification may be configured, for example, through RRC signaling.

[0152] In step 8, beam failure recovery is continued, for example, a new set of candidate beams may be set and beam scanning and determination processes may be performed.

[0153] Fig.32 An example process for beam failure recovery without feedback is shown.

[0154] and Fig.31 Similar to the example process shown, after detecting beam failure, the receiver will first enter the self-repair process in step 3, that is, the receiver will re-scan all receiving beams. If there is an available receiving beam, the beam will be selected to form a new beam pair link; if all receiving beams are unavailable, the self-repair fails.

[0155] In step 4, the failed transmission beam is continuously monitored. When the monitoring time exceeds a certain time threshold (determined by the service delay requirement), the communication is abandoned and other communication objects can be sought.

[0156] Next, a configuration example of an embodiment of an electronic device related to beam recovery is described. Figure 4 According to the present embodiment, the electronic device 400 includes a processing circuit 410. The processing circuit 410 includes a transceiver control unit 411 and a communication control unit 413, which are similar to the transceiver control unit 111 and the communication control unit 113 described in the previous embodiment.

[0157] The transceiver control unit 411 is further configured to control the receiving of indication information indicating link failure sent by another user equipment (receiver).

[0158] In addition, the processing circuit 410 may further include an adjustment unit 415 configured to adjust a beam set or a beam width used for sending a reference signal in response to the indication information.

[0159] Next, a configuration example of an embodiment of an electronic device related to beam recovery corresponding to a receiving side is described. Figure 6 As shown, the electronic device 600 according to this embodiment includes a processing circuit 610. The processing circuit 610 includes a transceiver control unit 611, a communication control unit 613, and a scan control unit 615. The transceiver control unit 611 and the communication control unit 613 are similar in configuration to the corresponding units described above.

[0160] The scanning control unit 615 is configured to control the reception beam scanning to be performed when the through link communication through the current reception beam fails.

[0161] According to one embodiment, the transceiver control unit 611 is further configured to control the sending of indication information indicating link failure to another user equipment (sender) when the receive beam scanning fails.

[0162] In addition, the transceiver control unit 611 may also be configured to control to monitor response information of another user equipment (sender) within a predetermined period of time after sending the above indication information.

[0163] Example embodiments related to beam recovery are described above. In addition, in some embodiments, a recovery mode for direct link communication may be determined based on business requirements. The recovery mode may include, for example, a reselection-request recovery mode, a multi-beam mode, and a beam widening mode. Business requirements may include, for example, reliability requirements and delay sensitivity requirements.

[0164] As an example, the services may be classified according to QoS (Quality of Service), which may correspond to PPPP (Pulse Through Packet Priority). The sender may select a suitable beam failure recovery mechanism according to the scope of PPPP and inform the receiver.

[0165] Table 4 below lists several categories of non-security related services and specific requirements.

[0166] Table 4:

[0167]

[0168] According to the reliability and latency requirements of the services, they can be divided into three categories (the usage codes in the above table represent the corresponding services): high reliability and insensitive to latency (6, 10, 11); low reliability and sensitive to latency (3, 12, 13, 16(1)); high reliability and insensitive to latency (16(2)).

[0169] For different types of services, the reselection-request recovery mechanism, multi-beam mechanism and beam widening mechanism can be applied respectively.

[0170] In actual scenarios, the sender can select a recovery mechanism based on business requirements. First, the QoS can be mapped to a specific PPPP range, with the actual PPPP value ranging from 0 to 8. The business can be divided into three levels according to the size of the PPPP, for example. The sender can directly select a suitable beam failure recovery mechanism based on the known PPPP. The corresponding relationship is shown in Table 5 below.

[0171] Table 5:

[0172]

[0173]

[0174] It should be noted that the PPPP values ​​given in Table 5 are only examples, and the actual PPPP values ​​depend on the specific implementation of operators and manufacturers.

[0175] Figure 33 to Figure 35 Example processes of a receiver-triggered reselection-request recovery mechanism, a multi-beam mechanism, and a beam widening mechanism are shown respectively.

[0176] like Fig.33 As shown, in step 1, after detecting a beam failure, the receiver can re-measure and scan all transmit beams based on a periodic beam reference signal to select a new available candidate beam. In step 2, the receiver sends a recovery request to the sender, which may include a candidate beam ID. In step 3, the receiver detects the sender's response within a predetermined time window. In step 4, the sender sends a response, which may include a retransmitted beam ID and an SCI corresponding to the retransmitted message. In step 5, retransmission is performed.

[0177] like Fig.34 As shown, in step 1, in the process of beam determination, instead of determining only one beam pair link for transmission, the sender and receiver can select a set of candidate beam sets, and measure and update the candidate beam set during the beam tracking process. Next, the beam tracking, measurement and reporting process is performed in steps 2-4. In step 5, after receiving the failure report, the sender can use the most recently updated candidate beam set for transmission, and can send the corresponding beam ID and SCI corresponding to the retransmission information to the receiver in the failure response message. In step 6, the message is transmitted on the candidate beam pair link.

[0178] The multi-beam mechanism can be triggered by the receiver after a beam fails. Alternatively, the sender can use multiple candidate beams to transmit the link simultaneously after the beam is determined in order to improve reliability or reduce interaction delay after failure.

[0179] Fig.35 An example process of the beam widening mechanism is shown, where (a) corresponds to the case where the transmitter triggers, and (b) corresponds to the case where the receiver triggers.

[0180] In the case of sender trigger, such as Fig.35 As shown in (a), beam tracking is performed in step 1, the sender determines whether a wider beam is needed in step 2, and if necessary, a wider beam is used to transmit the message in step 3.

[0181] In the case of receiver trigger, such as Fig.35 As shown in (b), beam tracking is performed in step 1, beam failure is determined by the receiver in step 2, failure requests and responses are made in steps 3 and 4, and a wider beam is used to transmit a message in step 5 as needed.

[0182] In addition, beam failure recovery can also be combined with other technologies as needed, such as carrier aggregation (to broaden bandwidth) or an enhanced HARQ (hybrid automatic repeat request) mechanism based on CBR (channel busy rate) / channel quality.

[0183] It should also be pointed out that the above-described example embodiment of determining a recovery method for direct link communication based on service requirements can be applied to feedback-based beam management and feedback-free beam management.

[0184] In the above description of the electronic device according to the embodiment of the present disclosure, it is obvious that some processes and methods are also disclosed. Next, a description of the method according to the embodiment of the present disclosure is given without repeating the details described above.

[0185] like Figure 7 As shown, according to one embodiment, a wireless communication method for user equipment side includes the following steps.

[0186] At S710 , a reference signal for a direct link is sent to or received from another user equipment.

[0187] At S720, direct link communication based on beamforming is performed with the other user equipment. At least one of a transmit beam and a receive beam used for the direct link communication is determined based on measurement of the reference signal.

[0188] In addition, the embodiments of the present invention also include a device and method at the base station side. Next, without repeating the details corresponding to the above embodiments, a description of the embodiments at the base station side is given.

[0189] like Figure 8 As shown, according to one embodiment, an electronic device 800 for a base station side includes a processing circuit 810. The processing circuit 810 includes an allocation unit 811, which is configured to allocate communication resources for sending a reference signal. The reference signal is used to determine at least one of a transmit beam and a receive beam for beamforming-based direct link communication between user equipments.

[0190] like Fig. 9 As shown, according to another embodiment, an electronic device 900 for a base station includes a processing circuit 910. The processing circuit 910 includes an allocating unit 911 (whose configuration is similar to the aforementioned allocating unit 811) and a sending control unit 913.

[0191] The transmission control unit 913 is configured to control to send at least one of the following information to one of the user equipments: the type of the reference signal; the time-frequency resource location of the reference signal; and the beam identifier corresponding to the reference signal.

[0192] Fig.10A wireless communication method for a base station side according to an embodiment is shown, which includes a step of allocating communication resources for sending a reference signal. The reference signal is used to determine at least one of a transmit beam and a receive beam for beamforming-based direct link communication between user equipments.

[0193] The embodiment of the present invention also includes a wireless communication device (user equipment side or base station side), which includes a transceiver device and an electronic device as described in the above embodiment.

[0194] In addition, an embodiment of the present invention also includes a computer-readable medium, which includes executable instructions. When the executable instructions are executed by an information processing device, the information processing device executes the method according to the above embodiment.

[0195] The embodiment of the present invention also includes a wireless communication device on the user equipment side and a wireless communication device on the base station side. The wireless communication device includes a transceiver and a processor described in combination with the above embodiment.

[0196] As an example, each step of the above method and each component module and / or unit of the above device can be implemented as software, firmware, hardware or a combination thereof. In the case of being implemented by software or firmware, it can be transmitted from a storage medium or a network to a computer (e.g., a computer) having a dedicated hardware structure. Fig.11 The general-purpose computer 1100 shown in the figure is installed with programs constituting software for implementing the above-mentioned method. When various programs are installed on the computer, it is possible to execute various functions, etc.

[0197] exist Fig.11 In the embodiment, a central processing unit (i.e., CPU) 1101 performs various processes according to a program stored in a read-only memory (ROM) 1102 or a program loaded from a storage section 1108 to a random access memory (RAM) 1103. In the RAM 1103, data required when the CPU 1101 performs various processes and the like is also stored as needed. The CPU 1101, the ROM 1102, and the RAM 1103 are linked to each other via a bus 1104. An input / output interface 1105 is also linked to the bus 1104.

[0198] The following components are linked to the input / output interface 1105: an input section 1106 (including a keyboard, a mouse, etc.), an output section 1107 (including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.), a storage section 1108 (including a hard disk, etc.), a communication section 1109 (including a network interface card such as a LAN card, a modem, etc.). The communication section 1109 performs communication processing via a network such as the Internet. A drive 1110 may also be linked to the input / output interface 1105 as needed. A removable medium 1111 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is installed on the drive 1110 as needed, so that a computer program read therefrom is installed in the storage section 1108 as needed.

[0199] In the case where the above-described series of processing is implemented 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 1111 .

[0200] It should be understood by those skilled in the art that such storage media is not limited to Fig.11 The removable medium 1111 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 1111 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 1102, a hard disk included in the storage section 1108, or the like, in which the program is stored and distributed to the user together with the device containing them.

[0201] The embodiment of the present invention further relates to a program product storing machine-readable instruction codes. When the instruction codes are read and executed by a machine, the method according to the embodiment of the present invention can be executed.

[0202] Accordingly, the storage medium for carrying the program product storing the machine-readable instruction code 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.

[0203] Embodiments of the present application also relate to the following electronic devices. In the case where the electronic device is used on the base station side, the electronic device can be implemented as any type of evolved Node B (eNB), such as a macro eNB and a small eNB. A small eNB can be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. Alternatively, the electronic device can be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS). Preferably, the electronic device can be implemented as a gNB in ​​a 5G system. The electronic device may include: a main body (also referred to as a base station device) configured to control wireless communications; and one or more remote radio heads (RRHs) arranged in a place different from the main body. In addition, the various types of terminals described below can all operate as base stations by temporarily or semi-persistently performing base station functions.

[0204] When the electronic device is used on the user equipment side, it can 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). In addition, the electronic device can be a wireless communication module (such as an integrated circuit module including a single or multiple chips) installed on each of the above terminals.

[0205] [Application examples for terminal devices]

[0206] Fig.12 2 is a block diagram showing an example of a schematic configuration of a smartphone 2500 to which the technology of the present disclosure can be applied. The smartphone 2500 includes a processor 2501, a memory 2502, a storage device 2503, an external connection interface 2504, a camera 2506, a sensor 2507, a microphone 2508, an input device 2509, a display device 2510, a speaker 2511, a wireless communication interface 2512, one or more antenna switches 2515, one or more antennas 2516, a bus 2517, a battery 2518, and an auxiliary controller 2519.

[0207] The processor 2501 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 2500. The memory 2502 includes a RAM and a ROM, and stores data and programs executed by the processor 2501. The storage device 2503 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 2504 is an interface for connecting an external device (such as a memory card and a universal serial bus (USB) device) to the smartphone 2500.

[0208] The camera 2506 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 2507 may include a group of sensors such as a measurement sensor, a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 2508 converts the sound input to the smart phone 2500 into an audio signal. The input device 2509 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 2510, and receives an operation or information input from a user. The display device 2510 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 2500. The speaker 2511 converts the audio signal output from the smart phone 2500 into sound.

[0209] The wireless communication interface 2512 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface 2512 may generally include, for example, a baseband (BB) processor 2513 and a radio frequency (RF) circuit 2514. The BB processor 2513 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 2514 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 2516. The wireless communication interface 2512 may be a chip module on which the BB processor 2513 and the RF circuit 2514 are integrated. Fig.12 As shown, the wireless communication interface 2512 may include multiple BB processors 2513 and multiple RF circuits 2514. Fig.12 An example is shown in which the wireless communication interface 2512 includes a plurality of BB processors 2513 and a plurality of RF circuits 2514 , but the wireless communication interface 2512 may also include a single BB processor 2513 or a single RF circuit 2514 .

[0210] In addition, in addition to the cellular communication scheme, the wireless communication interface 2512 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes. In this case, the wireless communication interface 2512 can include a BB processor 2513 and an RF circuit 2514 for each wireless communication scheme.

[0211] Each of the antenna switches 2515 switches a connection destination of the antenna 2516 between a plurality of circuits (eg, circuits for different wireless communication schemes) included in the wireless communication interface 2512 .

[0212] Each of the antennas 2516 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 2512 to transmit and receive wireless signals. Fig.12 As shown, the smart phone 2500 may include multiple antennas 2516. Fig.12 An example is shown in which the smart phone 2500 includes a plurality of antennas 2516 , but the smart phone 2500 may also include a single antenna 2516 .

[0213] In addition, the smartphone 2500 may include an antenna 2516 for each wireless communication scheme. In this case, the antenna switch 2515 may be omitted from the configuration of the smartphone 2500.

[0214] The bus 2517 connects the processor 2501, the memory 2502, the storage device 2503, the external connection interface 2504, the camera 2506, the sensor 2507, the microphone 2508, the input device 2509, the display device 2510, the speaker 2511, the wireless communication interface 2512, and the auxiliary controller 2519 to each other. The battery 2518 is fed to the Fig.12 The various blocks of the smartphone 2500 shown are supplied with power, the feed lines being partially shown as dashed lines in the figure. The auxiliary controller 2519 operates the minimum necessary functions of the smartphone 2500, for example in a sleep mode.

[0215] exist Fig.12 In the illustrated smart phone 2500, the transceiver device of the wireless communication device on the user equipment side according to the embodiment of the present invention can be implemented by the wireless communication interface 2512. At least a part of the functions of the processing circuit and / or each unit of the electronic device or wireless communication device on the user equipment side according to the embodiment of the present invention can also be implemented by the processor 2501 or the auxiliary controller 2519. For example, the power consumption of the battery 2518 can be reduced by having the auxiliary controller 2519 execute part of the functions of the processor 2501. In addition, the processor 2501 or the auxiliary controller 2519 can execute at least a part of the functions of the processing circuit and / or each unit of the electronic device or wireless communication device on the user equipment side according to the embodiment of the present invention by executing the program stored in the memory 2502 or the storage device 2503.

[0216] [Application examples for base stations]

[0217] Fig.13 23 is a block diagram showing an example of a schematic configuration of a gNB to which the technology of the present disclosure can be applied. The gNB 2300 includes a plurality of antennas 2310 and a base station device 2320. The base station device 2320 and each antenna 2310 can be connected to each other via a radio frequency (RF) cable.

[0218] Each of the antennas 2310 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 2320 to transmit and receive wireless signals. Fig.13 As shown, the gNB 2300 may include multiple antennas 2310. For example, the multiple antennas 2310 may be compatible with multiple frequency bands used by the gNB 2300.

[0219] The base station device 2320 includes a controller 2321 , a memory 2322 , a network interface 2323 , and a wireless communication interface 2325 .

[0220] The controller 2321 may be, for example, a CPU or a DSP, and operates various functions of the higher layers of the base station device 2320. For example, the controller 2321 generates a data packet based on the data in the signal processed by the wireless communication interface 2325, and transmits the generated packet via the network interface 2323. The controller 2321 may bundle data from a plurality of baseband processors to generate a bundled packet, and transmit the generated bundled packet. The controller 2321 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 gNB or core network node. The memory 2322 includes a RAM and a ROM, and stores programs executed by the controller 2321 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

[0221] The network interface 2323 is a communication interface for connecting the base station device 2320 to the core network 2324. The controller 2321 can communicate with the core network node or another gNB via the network interface 2323. In this case, the gNB 2300 and the core network node or other gNBs can be connected to each other through logical interfaces such as S1 interfaces and X2 interfaces. The network interface 2323 can also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 2323 is a wireless communication interface, the network interface 2323 can use a higher frequency band for wireless communication compared to the frequency band used by the wireless communication interface 2325.

[0222] The wireless communication interface 2325 supports any cellular communication scheme (such as long term evolution (LTE) and LTE-Advanced), and provides wireless connection to a terminal located in a cell of the gNB 2300 via the antenna 2310. The wireless communication interface 2325 may generally include, for example, a BB processor 2326 and an RF circuit 2327. The BB processor 2326 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing of layers (such as L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol (PDCP)). Instead of the controller 2321, the BB processor 2326 may have part or all of the above-mentioned logical functions. The BB processor 2326 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 2326. The module may be a card or a blade inserted into a slot of the base station device 2320. Alternatively, the module may also be a chip mounted on a card or a blade. Meanwhile, the RF circuit 2327 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 2310 .

[0223] like Fig.13 As shown, the wireless communication interface 2325 may include multiple BB processors 2326. For example, the multiple BB processors 2326 may be compatible with multiple frequency bands used by the gNB 2300. Fig.13 As shown, the wireless communication interface 2325 may include multiple RF circuits 2327. For example, the multiple RF circuits 2327 may be compatible with multiple antenna elements. Fig.13 An example is shown in which the wireless communication interface 2325 includes a plurality of BB processors 2326 and a plurality of RF circuits 2327 , but the wireless communication interface 2325 may also include a single BB processor 2326 or a single RF circuit 2327 .

[0224] exist Fig.13 In the gNB 2300 shown, the transceiver device of the wireless communication device on the base station side according to the embodiment of the present invention can be implemented by the wireless communication interface 2325. At least part of the functions of the processing circuit and / or each unit of the electronic device or wireless communication device on the base station side according to the embodiment of the present invention can also be implemented by the controller 2321. For example, the controller 2321 can execute at least part of the functions of the processing circuit and / or each unit of the electronic device or wireless communication device on the base station side according to the embodiment of the present invention by executing the program stored in the memory 2322.

[0225] [Application examples for car navigation devices]

[0226] Fig.142 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.14 As shown, the wireless communication interface 2133 may include multiple BB processors 2134 and multiple RF circuits 2135. Fig.14 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 .

[0231] In addition, in addition to the cellular communication scheme, the wireless communication interface 2133 can support other types of wireless communication schemes, such as 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.

[0232] 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.

[0233] 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.14 As shown, the car navigation device 2120 may include multiple antennas 2137. Fig.14 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 .

[0234] 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.

[0235] Battery 2138 is fed via a feeder Fig.14 The 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.

[0236] exist Fig.14 In the illustrated car navigation device 2120, the transceiver device or transceiver unit of the wireless communication device according to the embodiment of the present invention may be implemented by the wireless communication interface 2133. At least a part of the functions of the processing circuit and / or each unit of the electronic device or wireless communication device according to the embodiment of the present invention may also be implemented by the processor 2121.

[0237] 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.

[0238] In the above description of specific embodiments of the present invention, features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or replace features in other embodiments.

[0239] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0240] In the above embodiments and examples, reference numerals are used to represent various steps and / or units. It should be understood by those skilled in the art that these reference numerals are only for the convenience of description and drawing, and do not represent the order or any other limitation.

[0241] In addition, the method of the present invention is not limited to being executed in the time sequence described in the specification, and may also be executed in other time sequences, in parallel or independently. Therefore, the execution order of the method described in this specification does not limit the technical scope of the present invention.

[0242] Although the present invention has been disclosed above by describing specific embodiments of the present invention, it should be understood that all the above embodiments and examples are exemplary rather than restrictive. Those skilled in the art may design various modifications, improvements or equivalents of the present invention within the spirit and scope of the appended claims. These modifications, improvements or equivalents should also be considered to be included in the protection scope of the present invention.

Claims

1. An electronic device for wireless communication, comprising a processing circuit, The processing circuit is configured to control: sending at least one reference signal for a direct link to another user equipment or receiving at least one reference signal for a direct link from the another user equipment; and performing beamforming-based direct link communication with the other user equipment, in, At least one of a transmit beam and a receive beam for the through link communication is determined based on a measurement of the reference signal, The processing circuit is further configured to determine a beam management mode for the through link communication based on the stability of the through link, wherein: When the stability of the through link is not greater than a predetermined threshold, determining that the beam management mode is a first mode, wherein both the transmit beam and the receive beam are determined based on a measurement of the reference signal; and When the stability of the through link is greater than the predetermined threshold, the beam management mode is determined to be a second mode, wherein only one of the transmit beam and the receive beam is determined based on the measurement of the reference signal.

2. The electronic device according to claim 1, wherein: The processing circuit is configured to control to transmit a plurality of reference signals respectively corresponding to the plurality of beams to the another user equipment on the plurality of beams.

3. The electronic device according to claim 1, wherein: The reference signal includes a channel sounding reference signal, a direct link synchronization signal or a direct link beam management reference signal.

4. The electronic device according to claim 1, wherein: The processing circuit is further configured to control to send or receive at least one of the following information to or from the other user equipment: The type of the reference signal; The time-frequency resource position of the reference signal; and A beam identifier corresponding to the reference signal.

5. The electronic device according to claim 1, wherein: The information is sent or received via a physical direct link control channel.

6. The electronic device according to claim 1, wherein: The processing circuit is further configured to control to obtain the location information of the other user equipment and / or provide the location information of the current user equipment to the other user equipment, and Wherein, the determination of at least one of the transmit beam and the receive beam is also based on the position information.

7. The electronic device according to claim 6, wherein: The location information includes latitude and longitude, direction and speed.

8. The electronic device according to claim 6, wherein: The processing circuit is configured to perform control to broadcast the location information of the current user equipment and / or receive the location information broadcasted by the other user equipment.

9. The electronic device according to claim 1, wherein: The processing circuit is further configured to perform control to send indication information about the beam management manner to the other user equipment.

10. The electronic device according to claim 1, wherein: The reference signal is sent using resources allocated by the base station.

11. The electronic device according to claim 10, wherein: The resources are allocated through radio resource control signaling.

12. The electronic device according to claim 1, wherein: The processing circuit is configured to control to receive the reference signal from the other user equipment, and the processing circuit is further configured to control to receive at least one of the following information sent by the base station: The type of the reference signal; The time-frequency resource position of the reference signal; and A beam identifier corresponding to the reference signal.

13. The electronic device according to claim 1, wherein: The processing circuit is configured to perform control to send the reference signal to the other user equipment, and the processing circuit is further configured to: controlling to receive feedback information sent by the other user equipment based on measurement of the reference signal; and The transmit beam is determined based on the feedback information.

14. The electronic device according to claim 13, wherein: The processing circuit is further configured to perform control to notify the other user equipment of the determined transmission beam.

15. The electronic device according to claim 1, wherein: The processing circuit is configured to control to receive the reference signal from the other user equipment, and the processing circuit is further configured to: controlling to measure the reference signal; and The receive beam is determined based on a measurement of the reference signal.

16. The electronic device according to claim 15, wherein: The processing circuit is further configured to send feedback information to the other user equipment based on the measurement of the reference signal.

17. The electronic device according to claim 6, wherein: The processing circuit is further configured to: determining the transmit beam based on the location information of the other user equipment; and The reference signal is transmitted on the determined transmit beam.

18. The electronic device according to claim 1, wherein: The processing circuit is configured to control to periodically transmit a plurality of reference signals respectively corresponding to the plurality of beams to the another user equipment on the plurality of beams.

19. The electronic device according to claim 18, wherein: The processing circuit is further configured to control: receiving feedback information from the other user equipment for the reference signal sent periodically, and Beam adjustment is performed based on the feedback information.

20. The electronic device according to claim 19, wherein: The beam adjustment includes increasing the beam width.

21. The electronic device according to claim 1, wherein: The processing circuit is configured to control to measure a plurality of reference signals respectively corresponding to the plurality of beams and periodically transmitted by the another user equipment on the plurality of beams.

22. The electronic device according to claim 1, wherein: The processing circuit is further configured to control to receive indication information indicating link failure sent by the other user equipment.

23. The electronic device according to claim 22, wherein: The processing circuit is further configured to: in response to the indication information, adjust a beam set or a beam width used for sending the reference signal.

24. The electronic device according to claim 1, wherein: The processing circuit is further configured to: In the case where the through-link communication through the current reception beam fails, control is performed to perform reception beam scanning.

25. The electronic device according to claim 24, wherein: The processing circuit is further configured to: In the case where the receiving beam scanning fails, control is performed to send indication information indicating link failure to the other user equipment.

26. The electronic device according to claim 25, wherein: The processing circuit is further configured to: After sending the indication information, response information of the other user equipment is monitored within a predetermined period of time.

27. The electronic device according to claim 1, wherein: The processing circuit is further configured to determine a recovery mode for the direct link communication based on service requirements, wherein the recovery mode includes: a reselection-request recovery mode, a multi-beam mode, and a beam widening mode.

28. The electronic device according to claim 27, wherein: The business requirements include reliability requirements and delay sensitivity requirements.

29. An electronic device according to any one of the preceding claims, wherein: The user equipment includes a vehicle.

30. A wireless communication method, comprising: Sending a reference signal for a direct link to another user equipment or receiving a reference signal for a direct link from the another user equipment; as well as performing beamforming-based direct link communication with the other user equipment, wherein at least one of the transmit beam and the receive beam used for the direct link communication is determined based on a measurement of the reference signal, The beam management mode for communication of the through link is determined based on the stability of the through link, wherein: When the stability of the through link is not greater than a predetermined threshold, determining that the beam management mode is a first mode, wherein both the transmit beam and the receive beam are determined based on a measurement of the reference signal; and When the stability of the through link is greater than the predetermined threshold, the beam management mode is determined to be a second mode, wherein only one of the transmit beam and the receive beam is determined based on the measurement of the reference signal.

31. A computer-readable medium comprising executable instructions, which, when executed by an information processing device, cause the information processing device to perform the method according to claim 30.

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