CN114391269B - Wireless communication method and device - Google Patents

Abstract

The wireless communication method and equipment provided by this application can solve the problem of side link SL communication terminals during the cell reselection process under the system message on-demand mechanism. A wireless communication method is provided, including: when the terminal camps on the first cell and the terminal does not obtain the sidelink SL configuration information of the first cell, the terminal obtains the first SL according to the first SL configuration information. resource. The first SL configuration information is the current SL configuration information. Optionally, when the terminal obtains the SL configuration information of the first cell, the terminal obtains the second SL resource according to the SL configuration information of the first cell.

Description

Wireless communication method and device

Technical field

This application relates to the field of communication technology, and in particular to wireless communication methods and equipment.

Background technique

In communication systems, such as 5G systems, in order to save air interface resources, on-demand mechanisms are introduced, such as system information (SI) on-demand mechanisms, that is, network devices do not need to broadcast all messages all the time. System messages, some of which SI are not always broadcast, but will be sent by the network device based on the terminal's request. Among them, as is well known to those skilled in the art, SI may include MIB, and/or at least one SIB. As defined by 3GPP, SI includes minimum SI (minimum SI) and other SI (other SI). Network equipment will always broadcast the minimum SI. The minimum SI is a system information block (SIB) that is strongly related to terminal access and residence. ), for example, the minimum SI may include Master Information Block (MIB) and/or SIB1, where MIB includes the system frame number and SIB1 includes information used to evaluate whether the UE can access the cell; other SI, such as SIB3 , SIB4, SIB5, etc. The network device can always broadcast or send based on the terminal's request, depending on the implementation of the network device.

The terminal in the idle state or the inactive state can communicate on the sidelink (SL). When the terminal needs to reselect the serving cell due to movement, under the on-demand mechanism, the network equipment always broadcasts part of the SI ( Such as MIB and/or SIB1), when the SI (other SI) related to SL communication that the terminal needs to carry out needs to be broadcast by the access network device at the request of the terminal, even if the terminal is camped in the target cell, due to the need The terminal first requests the target cell, and then the target cell sends the SIB related to SL. As a result, the terminal cannot obtain SL communication resources in time, causing SL communication to be interrupted.

Contents of the invention

The wireless communication method and device provided by this application can solve the problem of SL communication terminals during the cell reselection process under the on-demand mechanism.

In a first aspect, a wireless communication method is provided, including: when the terminal camps on a first cell and the terminal does not obtain the sidelink SL configuration information of the first cell, the terminal uses the first SL configuration information to Get the first SL resource.

Among them, the source serving cell of the terminal is the second cell, because the terminal moves and camps in the first cell. The first SL configuration information is the current SL configuration information. Optionally, when the second cell supports SL communication required by the terminal, the first SL configuration information is the SL configuration information of the second cell. Or, when the second cell does not support the SL communication required by the terminal, or the terminal does not find a suitable cell to camp on before camping on the first cell, that is, when there is no source serving cell, the first SL configuration The information is pre-configured SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device, or can be pre-stored in the terminal or terminal chip.

The SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

It can be understood that the first SL configuration information is the configuration information of the source serving cell or preconfigured configuration information. For example, the first SL configuration information includes resource pool configuration information, indicating resource pool configuration information of the second cell or preconfigured resource pool configuration information. For another example, the first cell includes synchronization configuration information, indicating the synchronization configuration information of the first cell.

In one implementation, the method further includes: when the terminal obtains the SL configuration information of the first cell, the terminal obtains the second SL resource according to the SL configuration information of the first cell.

In one implementation, the SL configuration information includes sending resource pool configuration information, and/or receiving resource pool configuration information, and/or abnormal resource pool configuration information. As is well known to those skilled in the art, the terminal does not need to monitor the abnormal resource pool configuration information and can directly use the abnormal resource pool indicated by the abnormal resource pool configuration information. Other resource pool configuration information, such as sending resource pool configuration information or receiving resource pool configuration information, requires the terminal to monitor first and then obtain resources based on the monitoring results. The monitoring (sensing) means that after the terminal obtains the SL transmission resource pool indicated by the SL configuration information, it monitors the transmission resource pool, such as monitoring the signal strength of the resource, and determines whether the SL resource is available. When the terminal confirms that the SL resource can be used, that is, when the sensing result is that the monitored SL resource is available, the terminal can use the SL resource to send SL data instead of using the abnormal resource pool. In order to simplify the description in this application, the obtained sensing results are all considered to be that the monitored resources are available.

For example, when the SL configuration information of the first cell includes the transmission resource pool configuration information of the first cell, and the SL configuration information of the second cell includes the transmission resource pool configuration information of the second cell, when the terminal camps on the first cell, However, if the SL configuration information of the first cell is not obtained, the terminal obtains the sensing result of the transmission resource pool of the second cell according to the SL configuration information of the second cell, thereby obtaining the first SL resource. After the terminal obtains In the case of the SL configuration information of the first cell, the terminal obtains the second SL resource after obtaining the sensing result of the transmission resource pool of the first cell according to the transmission resource pool configuration information of the first cell.

In the case where the SL configuration information includes abnormal resource pool configuration information, for example, the first SL configuration information includes abnormal resource pool configuration information: when the terminal camps on the first cell but does not obtain the SL configuration information of the first cell. Next, the terminal obtains the third SL resource according to the abnormal resource pool configuration information. When the terminal obtains the SL configuration information of the first cell, the terminal obtains the second SL resource according to the SL configuration information of the first cell. For another example, the SL configuration information of the first cell includes abnormal resource pool configuration information and transmission resource pool configuration information. After obtaining the SL configuration information of the first cell, the terminal can first obtain the fourth SL resource according to the abnormal resource pool configuration information until the terminal After obtaining the monitoring result of the sending resource pool according to the sending resource pool configuration information, the second SL resource is obtained.

It can be seen that when the SL configuration information includes abnormal resource pool configuration information, the method described in the embodiment of this application is also applicable, even if there is an abnormal resource pool, the resource pool used by the terminal for SL communication has occurred many times. changes, the SL communication will still not be interrupted.

It can be understood that when the SL configuration information includes resource pool configuration information, and the terminal does not obtain the resource pool configuration information of the first cell (target cell) (that is, the SL configuration information of the first cell), it can be based on The first resource pool configuration information (that is, the first SL configuration information or the current SL configuration information) acquires the first SL resource. When the terminal obtains the resource pool configuration information of the first cell (SL configuration information of the first cell), it can obtain the second SL resource according to the resource pool configuration information of the first cell (SL configuration information of the first cell). . The first SL resource and the second SL resource may be the same resource or different resources. Among them, when the resource pool configuration information includes sending resource pool configuration information or receiving resource pool configuration information, the terminal not only needs to obtain the resource pool configuration information, but also obtains the monitoring results of the resource pool corresponding to the resource pool configuration information. , the terminal can obtain the SL resource based on the resource pool configuration information.

In an implementation manner, when the SL configuration information includes synchronization source information and is an access network device, when the terminal camps in the target cell (first cell), it can perform synchronization according to the target cell. Alternatively, when the terminal is camped in the target cell and has not obtained the synchronization source information of the target cell, it can choose to synchronize with the first cell or the second cell based on the synchronization source information of the source serving cell (second cell). .

In one implementation, when the SL configuration information includes the synchronization source information as GNSS, and the terminal camps in the target cell and does not obtain the DFN timing parameters of the target cell, it can be based on the source serving cell (Chapter 1). The DFN timing parameters of cell 2 are synchronized with GNSS. When the terminal camps in the target cell and obtains the DFN timing parameters of the target cell, the terminal can synchronize with the GNSS based on the DFN timing parameters of the target cell (first cell).

In one implementation, when the SL configuration information includes SLRB configuration information, and when the terminal camps in the target cell and does not obtain the SLRB configuration information of the target cell, the source serving cell (second cell ) to establish the first SLRB. When the terminal camps on the target cell and obtains the SLRB configuration information of the target cell, the terminal can establish a second SLRB based on the SLRB configuration information of the target cell (first cell) and delete the previously established first SLRB.

It can be seen from the above that when the terminal camped in the first cell does not obtain the SL configuration information of the first cell (i.e., the target cell), it can continue to use the first SL configuration information, thereby effectively ensuring the reliability of SL communication and efficiently solving the problem. This solves the problem of being unable to obtain the required SL configuration information of the target cell in time, causing SL communication interruption.

In a second aspect, a wireless communication method is provided. A terminal is camped in a second cell, including: the terminal receives at least one second sidelink SL configuration information from the second cell, and the second SL configuration information includes a neighboring cell identifier. information and the SL configuration information corresponding to the adjacent cell identification information. Wherein, the second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The description of the SL configuration information, resource pool configuration information, SLRB configuration information, and synchronization configuration information is the same as the description of the first aspect and its implementation above, and will not be described again here.

The identification information of the neighboring cells may include a physical cell identity PCI, or other cell-related identification information, such as a cell global identity CGI or a cell index. Taking PCI as an example, for example, the first SL configuration information corresponding to the first neighboring cell PCI1 is SL configuration 1, the second SL configuration information corresponding to the second neighboring cell PCI2 is SL configuration 2, and the third neighboring cell PCI3 corresponds to The third SL configuration information is SL configuration 3 and so on.

In one implementation, at least one second SL configuration information is sent through system broadcast, and the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information can be in the same SIB. Broadcasting can also be broadcast in different SIBs, and this application does not impose restrictions on this.

In one implementation, at least one second SL configuration information is sent to the terminal through RRC signaling, and the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information can be sent at the same time. One RRC signaling is sent to the terminal, or different RRC signaling is sent to the terminal. This application does not limit this.

In an implementation manner, before the terminal camps on the first neighboring cell, the terminal obtains the first SL resource according to the first SL configuration information. Wherein, if the second cell supports the SL communication required by the terminal, the first SL configuration information is the SL configuration information of the second cell. Or, if the second cell does not support the SL communication required by the terminal, or if the terminal does not find a suitable cell to camp on before camping on the first adjacent cell, that is, there is no source service. When entering a cell, the first SL configuration information is pre-configured SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device, or can be pre-stored in the terminal chip. .

In an implementation manner, when the terminal camps on the first neighboring cell, the terminal obtains the second SL resource according to the second SL configuration information. It should be noted that the specific time for the terminal to obtain the second SL resource according to the second SL configuration information may depend on the terminal implementation. For example, when camping on the first neighboring cell, the terminal may obtain the second SL resource according to the second SL configuration information. 2. SL resources. For another example, when receiving the second SL configuration information, the terminal may obtain the second SL resource according to the second SL configuration information. This application does not limit the specific time for obtaining the second SL resource according to the second SL configuration information.

In one implementation, the second SL configuration information includes abnormal resource pool configuration information. When the terminal camps on the first neighboring cell and does not obtain the transmission resource pool of the first neighboring cell, Before monitoring the result, the terminal acquires the third SL resource according to the abnormal resource pool configuration information, wherein the sending resource pool is the resource pool corresponding to the sending resource pool configuration information.

For example, the second SL configuration information includes abnormal resource pool configuration information of the first neighboring cell, and the terminal can obtain the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell. Then, after the transmission resource pool configuration information of the first neighboring cell can be further obtained, and the sensing result of the transmission resource pool is obtained, the second SL resource is obtained based on the transmission resource pool configuration information of the first neighboring cell. For another example, the second configuration SL information includes the abnormal resource pool configuration information of the first neighboring cell and the transmitting resource pool configuration information of the first neighboring cell. The terminal may first obtain the abnormal resource pool configuration information of the first neighboring cell. The third SL resource, after obtaining the transmission resource pool configuration information of the first neighboring cell and obtaining the sensing result of the transmission resource pool of the first neighboring cell, is based on the transmission resource pool configuration information of the first neighboring cell. Obtain the second SL resource.

It can be seen from the above that when the terminal is in the second cell (source serving cell), it can obtain the second SL configuration information of the adjacent cell from the second cell, and then the terminal reselects the adjacent cell of the target (that is, the target cell, such as In the case of the first neighboring cell), the terminal obtains the second SL resource based on the second SL configuration information of the target cell obtained from the source serving cell, so that the second SL resource of the target cell can be obtained in time (or in advance). SL configuration information is used to obtain the second SL resource, and SL communication can be continued. This also solves the problem of SL communication interruption when the terminal reselects a cell.

In a third aspect, a wireless communication method is provided. The method includes: a first access network device sending at least one second sidelink SL configuration information, where the second SL configuration information includes adjacent cell identification information and adjacent cell identification information. Corresponding SL configuration information; wherein, the second SL configuration information is used to configure the second SL resource for the terminal, including one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The SL configuration information, resource pool configuration information, SLRB configuration information, or synchronization configuration information is the same as the description of the first aspect and its implementation above, and will not be described again here.

The adjacent cell identification is the same as the above description of the second aspect and its implementation, and will not be described again here.

In one implementation, the first access network device always broadcasts the second SL configuration information, so that the terminal can quickly obtain the SL configuration information of the target cell. The always-broadcasting refers to continuous and uninterrupted broadcasting, or is called continuous broadcasting. Alternatively, the first access network device broadcasts the second SL configuration information on demand, which can reduce air interface resources.

In an implementation manner, the first access network device may also broadcast the SL configuration information of the second cell. The first access network device always broadcasts the SL configuration information of the second cell, or the first access network device broadcasts the SL configuration information of the second cell on demand, where the SL configuration information of the second cell is consistent with the second SL configuration. The information (SL configuration information corresponding to adjacent cells) can be sent together, for example, in the same SIB. Alternatively, the SL configuration information of the second cell and the second SL configuration information may be sent separately, for example, in different SIBs, and this application does not limit this.

In one implementation, the method further includes: before the first access network device sends the second SL configuration information to the terminal, the first access network device obtains the second SL configuration information from the adjacent cell.

In one embodiment, the method further includes:

The first access network device sends the SL configuration information of the second cell to the second access network device, and the second cell is the cell where the terminal currently resides.

It can be seen that the serving cell can not only broadcast the second SL configuration information of the neighboring cell to the terminal, but also broadcast the SL configuration information of its own cell to the terminal, so that the terminal can learn the target cell after reselection before cell reselection. second SL configuration information, thereby ensuring the continuity of SL communication of the terminal during the cell reselection process.

In a fourth aspect, a wireless communication apparatus or device is provided, including: a processor, the processor is coupled to a memory, the memory is used to store instructions, and the processor is used to execute the instructions, so that the wireless communication The device performs the method described in any one of the above first aspect and the first aspect implementation.

In a fifth aspect, a wireless communication apparatus or device is provided, including: a processor, the processor is coupled to a memory, the memory is used to store instructions, and the processor is used to execute the instructions, so that the wireless communication The device performs the method described in any one of the above second aspect and the second aspect implementation.

In a sixth aspect, a wireless communication device or device is provided, including: a processor, the processor is coupled to a memory, the memory is used to store instructions, and the processor is used to execute the instructions, so that the wireless communication The device executes the method described in any one of the above third aspect and the third aspect implementation.

In a seventh aspect, a computer-readable storage medium is provided, including computer-readable instructions. When a communication device reads and executes the computer-readable instructions, the communication device causes the communication device to perform the above first aspect and the implementation of the first aspect. any of the methods described above.

In an eighth aspect, a computer-readable storage medium is provided, including computer-readable instructions. When a communication device reads and executes the computer-readable instructions, the communication device causes the communication device to perform the above second aspect and the implementation of the second aspect. any of the methods described above.

In a ninth aspect, a computer-readable storage medium is provided, including computer-readable instructions. When a communication device reads and executes the computer-readable instructions, the communication device causes the communication device to perform the above third aspect and the implementation of the third aspect. any of the methods described above.

In a tenth aspect, a computer program product is provided, including computer readable instructions. When a communication device reads and executes the computer readable instructions, the communication device performs any of the above first aspect and the first aspect implementation. The method described in 1.

In an eleventh aspect, a computer program product is provided, which includes computer-readable instructions. When a communication device reads and executes the computer-readable instructions, the communication device performs the above second aspect and the implementation of the second aspect. any of the methods described.

In a twelfth aspect, a computer program product is provided, including computer-readable instructions. When a communication device reads and executes the computer-readable instructions, the communication device performs the above third aspect and the implementation of the third aspect. any of the methods described.

In a thirteenth aspect, a communication system is provided, which communication system includes the above fourth aspect and the device of any implementation manner of the fourth aspect, and/or the fifth aspect and any implementation manner of the fifth aspect. device, and/or the sixth aspect and the device of any embodiment of the sixth aspect.

Optionally, the system may also include a remote radio frequency unit, a baseband processing unit, or a core network device.

The beneficial effects of any implementation manner of the above fourth aspect, seventh aspect, and tenth aspect are the same as those of the above first aspect, and will not be described again here.

The beneficial effects of any one of the embodiments of the fifth aspect, the eighth aspect, and the eleventh aspect are the same as those of the second aspect, and will not be described again here.

The beneficial effects of any implementation manner of the above sixth aspect, ninth aspect, and twelfth aspect are the same as those of the above second aspect, and will not be described again here.

The beneficial effects of any embodiment of the above thirteenth aspect and the twelfth aspect are the same as any of the above aspects, and will not be described again here.

Description of the drawings

Figure 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a partial schematic diagram of Figure 1;

Figure 3 is a schematic diagram of a wireless communication method provided by an embodiment of the present application;

Figure 4 is a schematic flow chart of another wireless communication method provided by an embodiment of the present application;

Figure 5 is a schematic diagram of the architecture of the method in Figure 4;

Figure 6 is a schematic flow chart of another wireless communication method provided by an embodiment of the present application;

Figure 7 is a schematic diagram of the architecture of the method in Figure 6;

Figure 8 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application;

Figure 9 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application;

Figure 10 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application;

Figure 12 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application;

Figure 15 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application;

Figure 16 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application;

Figure 17 is a schematic structural diagram of another wireless communication device provided by an embodiment of the present application.

Detailed ways

In this application, "at least one" refers to one or more, and "plurality" refers to two or more. "And/or" describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are in an "or" relationship. "At least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple . In addition, the embodiments of this application use words such as “first” and “second” to distinguish identical or similar items that have basically the same functions and effects. For example, the first message and the second message are only used to distinguish different messages, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order.

It should be noted that in this application, the words "exemplary" or "for example" or "exemplary" or "such as" are used to represent examples, illustrations or explanations. Any embodiment or design described herein as "exemplary," "such as," etc. is not intended to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "such as" is intended to present the concept in a concrete manner.

The technical solution of this application can be applied to various communication systems, such as: long time evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), global interoperability for microwave access (WiMAX) communication system, public land mobile network (PLMN) system, 5G communication system and future communication system wait. The technical solution of this application may include a variety of application scenarios, such as vehicle to everything (V2X), vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle and infrastructure (vehicle to infrastructure, V2I), machine to machine (M2M), device to machine (D2M), device to device (D2D), macro and micro communications, enhanced mobile Internet ( Enhance mobile broadcastband (eMBB), ultra-high reliability and ultra-low latency communication (uRLLC), and massive IoT communication (massive machine type communication (mMTC)) and other scenarios.

The network architecture and business scenarios described in the embodiments of this application are for the purpose of explaining the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems. In the embodiments of this application, the provided method is applied to a New Radio (New Radio, NR) system or a 5G network as an example for description.

Figure 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application. Referring to Figure 1, the communication system includes: an access network device 10 and at least two terminals. Figure 1 takes two terminals as an example. The two terminals are terminal 20 and terminal 30. Both terminal 20 and terminal 30 can be connected to The access network 10 communicates. Figure 1 only shows the terminal 20 communicating with the access network 10. The terminal 20 can also communicate with the terminal 30. Optionally, the access network device 10 can also directly communicate with the terminal 30. This is only an example and is not limited in this document.

It should be noted that the communication system shown in Figure 1 may also include: core network equipment 40. The access network device 10 may be connected to the core network device. The core network device 40 may be a 4G core network (eg, Evolved Packet Core (EPC)) device or a 5G core network (5G Core, 5GC) device, or a core network device in various future communication systems.

Taking the core network device 40 as a 5G core network device as an example, the access network device 10 can be the Next Generation Node B (gNB) in the NR system, and the terminal 20 can be a terminal that transmits information with the gNB. gNB accesses 5GC through the NG interface.

Of course, the access network device 10 may also be a third generation partnership project (3rd generation partnership project, 3GPP) protocol access network device or base station, or may be a non-3GPP protocol access network device or base station.

The wireless communication transmission link between the terminal 20 and the terminal 30 may be, for example, a sidelink (SL).

The terminal 20 and the terminal 30 may be a device with a wireless communication function and may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted. It can also be deployed on water (such as ships, etc.). It can also be deployed in the air (such as on airplanes, balloons, satellites, etc.). The terminal is also called user equipment (UE), mobile station (MS), mobile terminal (MT), terminal equipment, etc. It is a device that provides voice and/or data connectivity to users. . For example, terminals include handheld devices, vehicle-mounted devices, etc. with wireless connection functions. Currently, terminals can be: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices (such as smart watches, smart bracelets, pedometers, etc.), In-vehicle equipment (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, and industrial control (industrial control) Wireless terminals, smart home equipment (such as refrigerators, TVs, air conditioners, electricity meters, etc.), intelligent robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, Wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, flight equipment (for example, Intelligent robots, hot air balloons, drones, airplanes), etc. In one possible application scenario of this application, the terminal is a terminal device that often works on the ground, such as a vehicle-mounted device. In this application, for convenience of description, chips deployed in the above devices, such as system-on-a-chip (SOC), baseband chips, etc., or other chips with communication functions can also be called terminals.

The terminal 20 or the terminal 30 may be a vehicle with corresponding communication functions, or a vehicle-mounted communication device, or other embedded communication device, or it may be a user's handheld communication device, including a mobile phone, a tablet computer, etc.

As an example, the terminal 20 and the terminal 30 may also include wearable devices. Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

The access network device 10 is an entity used in conjunction with the terminal 20 or the terminal 30 and can be used to transmit or receive signals. For example, it can be an Access Point (AP) in WLAN, an evolved base station (eNB or eNodeB) in LTE, a relay station or access point, or a vehicle-mounted device or a wearable device. As well as network equipment in future 5G networks or access network equipment in future evolved PLMN networks, etc.

In addition, in the embodiment of the present application, the access network equipment provides services for the cell, and the terminal uses the transmission resources (for example, time domain resources, or frequency domain resources, or time-frequency resources) used by the cell to communicate with the access network equipment. communicate. As is well known to those skilled in the art, different cells can belong to the same access network device, that is, one access network device can provide services for multiple different cells, or different cells can also belong to different access network devices. , that is, different access network equipment provides services for different cells.

Please continue to refer to Figure 1 and combine it with Figure 2. The terminal 20 in the idle state or the inactive state has ongoing SL communication with the terminal 30. When the terminal 20 needs to perform cell reselection due to mobility, the terminal receives the SI broadcast by the neighboring cell. (including SIB1), select an appropriate target cell to camp on based on the service quality of the adjacent cells. For example, the terminal selects the adjacent cell with the strongest SI as the target cell. As shown in Figure 1, the first cell is the target of the terminal 20. community. The cell currently served by the terminal 20 is the second cell, or the source serving cell of the terminal 20 is the second cell. The first cell and the second cell may belong to the same access network device, such as the access network device 10 shown in Figure 1, or they may belong to different access network devices, and this application does not limit this.

In the communication system under the on-demand mechanism, since the access network equipment will only always broadcast the SI necessary for terminal access (for example, SIB1), when the terminal finds that it needs the SL communication-related SI (SL-related SIB, it can be When the target cell does not broadcast one or more SIBs, the terminal will learn that the target cell supports SL communication based on the SI broadcast by the target cell (such as SIB1). For example, SIB1 includes an indication of the SL-related SIB. The terminal can also learn the random access resources corresponding to the SL-related SIB (other SIBs, such as other SIBs except SIB1), and then the terminal triggers random access (such as sending a preamble to the first cell), instructing the first cell to send the The required SL-related SIB. After the terminal receives the SL-related SI (SIB), it can obtain the required SL resource configuration, and then it can continue SL communication. As can be seen from the above, after the terminal camps in the target cell, it cannot obtain it in time. The SL-related resources of the target cell will cause SL communication to be interrupted.

Please refer to Figure 2. When the terminal 20 reselects to the first cell at time T1, or is stationed in the first cell at time T1, in the communication system under the on-demand mechanism, the terminal needs to first receive the first cell according to the first cell. The SI broadcast by the cell, such as SIB1, obtains the random access resource information corresponding to the SL communication-related SIB, such as SIB3 information, and then triggers a random access request at time T2. The random access resource corresponding to the random access resource information, such as SIB3, Therefore, the terminal 20 obtains the SL resource configuration information of the first cell at the subsequent time T3, that is, obtains the required SL resource configuration information. As can be seen from the above, during the period from T1 to T3, even if the terminal 20 has camped in the first cell, the terminal 20 cannot obtain the SL configuration information of the first cell in time, causing SL communication to be interrupted.

The wireless communication method and equipment provided by this application can solve the problem of the above terminal camped in the target cell but unable to obtain the SL configuration information of the target cell in time, resulting in SL communication interruption.

Please refer to Figure 3. The source serving cell of the terminal is the second cell. Since the terminal moves and camps in the first cell, this is a schematic diagram of a wireless communication method provided by an embodiment of the present application.

When the terminal camps on the first cell and the terminal does not obtain the sidelink SL configuration information of the first cell, the terminal obtains the first SL resource according to the first SL configuration information.

The first SL configuration information is the current SL configuration information. Optionally, when the second cell supports SL communication required by the terminal, the first SL configuration information is the SL configuration information of the second cell. Or, when the second cell does not support the SL communication required by the terminal, or the terminal does not find a suitable cell to camp on before camping on the first cell, that is, when there is no source serving cell, the first SL configuration The information is pre-configured SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device, or can be pre-stored in the terminal chip.

The SL configuration information includes one or more of the following: resource pool configuration information, sidelink radio bearer (SLRB) configuration information, or synchronization configuration information.

For example, the first SL configuration information includes sending resource pool configuration information, indicating that the current configuration information includes sending source serving cell or preconfigured resource pool configuration information. The SL configuration information of the first cell includes abnormal resource pool configuration information, indicating the abnormal resource pool configuration information of the first cell. The SL configuration information of the first cell refers to the SL configuration information related to the first cell. For example, the resource pool configuration information includes sending resource pool configuration information, and/or receiving resource pool configuration information, and/or abnormal resource pool configuration information. The SLRB configuration information includes configuration information of the service data adaptation protocol (SDAP) corresponding to the SLRB and/or configuration information of the packet data convergence protocol (PDCP) and/or radio link control (radio link) control, RLC) configuration information and/or media access control (media access control, MAC) configuration information. The synchronization configuration information includes synchronization source information and/or other synchronization information, such as cyclic prefix (CP) length.

The fact that the terminal has not obtained the sidelink SL configuration information of the first cell means that under the on-demand mechanism, even if the terminal has camped in the first cell, the terminal needs to request the required SL resources first. After further obtaining the SL configuration information of the first cell, for example, between time T1 and time T3 shown in Figure 3, the terminal does not obtain the SL configuration information of the first cell.

Optionally, when the terminal obtains the SL configuration information of the first cell, for example, at time T3 and after time T3 shown in Figure 3, the terminal obtains the second SL resource according to the SL configuration information of the first cell.

Among them, the SL configuration information includes sending resource pool configuration information, and/or receiving resource pool configuration information, and/or abnormal resource pool configuration information as an example.

As is well known to those skilled in the art, the terminal can directly use the abnormal resource pool indicated by the abnormal resource pool configuration information without sensing the abnormal resource pool configuration information. Other resource pool configuration information, such as sending resource pool configuration information or receiving resource pool configuration information, requires the terminal to monitor first and then obtain resources based on the monitoring results.

Sensing as described in this application means that after the terminal obtains the SL sending resource pool indicated by the SL configuration information, it monitors the sending resource pool, such as monitoring the signal strength on the resource and determining whether the SL resource is available. . When the terminal confirms that the SL resource can be used, that is, when the sensing result is that the monitored SL resource is available, the terminal can use the SL resource to send SL data instead of using the abnormal resource pool. In order to simplify the description in this application, the obtained monitoring results are all considered to be that the monitored resources are available.

For example, in a possible implementation, the SL configuration information of the first cell includes the transmission resource pool configuration information of the first cell, and the SL configuration information of the second cell includes the transmission resource pool configuration information of the second cell. In T3 Before time T3, after the terminal obtains the sensing result of the transmission resource pool of the second cell according to the transmission resource pool configuration information of the second cell, thereby obtaining the first SL resource, after time T3 (which may include time T3), the terminal obtains the first SL resource according to the second time T3. After the transmission resource pool configuration information of a cell obtains the sensing result of the transmission resource pool of the first cell, the second SL resource is obtained.

In another possible implementation, the SL configuration information of the second cell also includes the abnormal resource pool configuration information of the second cell. After the T1 time (which may include the T1 time), the terminal first The configuration information obtains the third SL resource. After obtaining the transmission resource pool configuration information of the first cell and obtaining the sensing result of the transmission resource pool of the first cell, the third SL resource is obtained based on the transmission resource pool information of the first cell. 2. SL resources. Of course, the transmission resource pool configuration information of the second cell can also be used to obtain the fourth SL resource at time T1. This application does not impose strict restrictions on the SL configuration information used at time T1. The resources represented by the first SL resource, the second SL resource, the third SL resource, the fourth SL resource, etc. described in this application may be the same or different, and this application does not limit this.

In another possible implementation, the SL configuration information of the first cell and the SL configuration information of the second cell respectively include sending resource pool configuration information and abnormal resource pool configuration information. Before time T1, the terminal, according to the second cell The transmission resource pool configuration information obtains the first SL resource. After T1, the terminal obtains the third SL resource according to the abnormal resource pool configuration information of the second cell, until the terminal obtains the transmission resource pool information of the first cell, and obtains The terminal obtains the second SL resource according to the monitoring result of the transmission resource pool of the first cell according to the transmission resource pool information of the first cell. Or after time T3 (which may include time T3), the terminal first obtains the fourth SL resource according to the abnormal resource pool indicated by the abnormal resource pool configuration information of the first cell, and then obtains the transmission resource pool information of the first cell, and obtains After obtaining the sensing result of the transmission resource pool of the first cell, the second SL resource is obtained according to the transmission resource pool configuration information of the first cell. Among them, there are no strict restrictions on the SL configuration information used at T1 time, T2 time and T3 time. It is the same as the introduction at T1 time above and will not be described again here.

It can be seen that when the SL configuration information includes abnormal resource pool configuration information, the method described in the embodiment of this application is also applicable, even if there is an abnormal resource pool, the resource pool used by the terminal for SL communication has occurred many times. changes, the SL communication will still not be interrupted. It can be seen from the above that when the terminal camped in the first cell does not obtain the SL configuration information of the first cell (i.e., the target cell), it can continue to use the first SL configuration information, thereby effectively ensuring the reliability of SL communication and efficiently solving the problem. This solves the problem of being unable to obtain the required SL configuration information of the target cell in time, causing SL communication interruption.

It can be understood that when the SL configuration information includes resource pool configuration information, and the terminal does not obtain the resource pool configuration information of the first cell (target cell) (that is, the SL configuration information of the first cell), it can be based on The first resource pool configuration information (that is, the first SL configuration information or the current SL configuration information) acquires the first SL resource. When the terminal obtains the resource pool configuration information of the first cell (SL configuration information of the first cell), it can obtain the second SL resource according to the resource pool configuration information of the first cell (SL configuration information of the first cell). . The first SL resource and the second SL resource may be the same resource or different resources. Among them, when the resource pool configuration information includes sending resource pool configuration information or receiving resource pool configuration information, the terminal not only needs to obtain the resource pool configuration information, but also obtains the monitoring results of the resource pool corresponding to the resource pool configuration information. , the terminal can obtain the SL resource based on the resource pool configuration information.

Taking the SL configuration information including synchronization source information as an example, please continue to combine the communication method shown in Figure 3. In a possible implementation, the synchronization source indicated by the synchronization source information is the access network device. From T1 to T3 From time to time, the terminal can be synchronized with the second cell or the first cell. Wherein, in the case where the first access network device provides services for the first cell and the second access network device provides services for the second cell, it can also be understood that the terminal can either synchronize with the first access network device or Synchronize with the second access network device. The first access network device and the second access network device may be the same access network device or may be different access network devices.

It can be understood that when the SL configuration information includes synchronization source information and is an access network device, the terminal can perform synchronization according to the target cell when camping in the target cell (first cell). Alternatively, when the terminal is camped in the target cell and has not obtained the synchronization source information of the target cell, it can choose to synchronize with the first cell or the second cell based on the synchronization source information of the source serving cell (second cell). . In another possible implementation, when the synchronization source indicated by the synchronization source information is a global navigation satellite system (GNSS), the synchronization configuration information also includes a direct frame number (DFN). ) Timing parameters, such as DFN offset, are parameters used by the terminal to determine DFN timing based on GNSS. For example, as shown in Figure 3, between times T1 and T3, the terminal uses the DFN timing parameters of the second cell to synchronize with the GNSS. After the T3 time (which may include the T3 time), the terminal uses the DFN timing parameters of the first cell to achieve synchronization with the GNSS.

It can be understood that when the SL configuration information includes the synchronization source information as GNSS, when the terminal is camped in the target cell and the DFN timing parameters of the target cell are not obtained, the source serving cell (second cell) The DFN timing parameters are synchronized with GNSS. When the terminal camps in the target cell and obtains the DFN timing parameters of the target cell, the terminal can synchronize with the GNSS based on the DFN timing parameters of the target cell (first cell).

Taking the SL configuration information including the SLRB configuration information as an example, before the T3 time, the terminal will establish the first SLRB according to the current SLRB configuration information; after the T3 time (which may include the T3 time), the terminal will establish the first SLRB according to the SLRB of the first cell. The configuration information establishes the second SLRB and deletes the previously established first SLRB.

It can be understood that when the SL configuration information includes SLRB configuration information, when the terminal is camped in the target cell and the SLRB configuration information of the target cell is not obtained, the SLRB configuration information of the source serving cell (second cell) can be used. Configuration information establishes the first SLRB. When the terminal camps on the target cell and obtains the SLRB configuration information of the target cell, the terminal can establish a second SLRB based on the SLRB configuration information of the target cell (first cell) and delete the previously established first SLRB.

In this application, the terminal can also broadcast the SL configuration information of the adjacent cell from the current serving cell before cell reselection, so that the terminal can obtain the SL configuration information of the target cell before camping on the target cell, which can also be solved. The problem of SL communication interruption by the terminal in the case of cell reselection.

Please refer to Figures 4 and 5, which are schematic diagrams of another wireless communication method provided by embodiments of the present application. The current serving cell (source serving cell) of the terminal is the second cell, or the terminal is currently camped in the second cell. The second cell is served by the first access network device. The adjacent cell is an adjacent cell of the second cell. The adjacent cell includes a first adjacent cell. The first adjacent cell may be the second cell. Any adjacent cell, the first adjacent cell is served by the second access network equipment:

S410: The first access network device sends at least one second sidelink SL configuration information.

The second SL configuration information includes adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information. The second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The descriptions of the resource pool configuration information, SLRB configuration information, and synchronization configuration information are the same as in the embodiment shown in Figure 3 above, and will not be described again here.

The identification information of the neighboring cells may include a physical cell identifier (PCI), or other cell-related identification information, such as a cell global identifier (CGI) or a cell index. Taking PCI as an example, for example, the first SL configuration information corresponding to the first neighboring cell PCI1 is SL configuration 1, the second SL configuration information corresponding to the second neighboring cell PCI2 is SL configuration 2, and the third neighboring cell PCI3 corresponds to The third SL configuration information is SL configuration 3 and so on. At this time, the specific form of the adjacent cell identification information and the SL configuration information corresponding to the adjacent cell identification information can be shown in the following table:

Wherein, if at least one second SL configuration information is sent through system broadcast, the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information may be broadcast in the same SIB, or may Broadcasting in different SIBs, this application does not limit this. It can be understood that the first access device broadcasts at least one second SL configuration information through one or more SIBs of the second cell. For example, the first access device broadcasts a second SL configuration information through a SIB of the second cell; for another example, the first access device broadcasts a plurality of second SL configuration information through a SIB of the second cell; For another example, the first access device broadcasts a second SL configuration information through multiple SIBs of the second cell, etc. This application does not limit this. or,

If at least one second SL configuration information is sent to the terminal through RRC signaling, the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information can be sent to the terminal in the same RRC signaling. The terminal can also send different RRC signaling to the terminal, and this application does not limit this. Optionally, the first access network device sends the at least one second SL configuration information to the terminal while instructing the terminal device to enter the idle state or the inactive state through RRC signaling.

Optionally, the wireless communication method provided by the embodiment of this application also includes:

S410’: The terminal receives the second SL configuration information.

Optionally, the wireless communication method provided by the embodiment of this application also includes:

S420: The terminal obtains the second SL resource according to the second SL configuration information.

Optionally, the terminal may use the second SL resource to perform SL communication when camping on the first neighboring cell.

It should be noted that the specific time for the terminal to obtain the second SL resource according to the second SL configuration information may depend on the terminal implementation. For example, when camping on the first neighboring cell, the terminal may obtain the second SL resource according to the second SL configuration information. 2. SL resources. For another example, when receiving the second SL configuration information, the terminal may obtain the second SL resource according to the second SL configuration information. This application does not limit the specific time for obtaining the second SL resource according to the second SL configuration information.

It can be seen from the above that when the terminal is in the second cell (source serving cell), it can obtain the second SL configuration information of the adjacent cell from the second cell, and then the terminal reselects the adjacent cell of the target (that is, the target cell, such as In the case of the first neighboring cell), the terminal obtains the second SL resource based on the second SL configuration information of the target cell obtained from the source serving cell, so that the second SL resource of the target cell can be obtained in time (or in advance). SL configuration information is used to obtain the second SL resource, and SL communication can be continued. This also solves the problem of SL communication interruption when the terminal reselects a cell.

Optionally, the first access network device always broadcasts the second SL configuration information, so that the terminal can quickly obtain the SL configuration information of the target cell. The always-broadcasting refers to continuous and uninterrupted broadcasting, or is called continuous broadcasting. Alternatively, the first access network device broadcasts the second SL configuration information on demand, which can reduce air interface resources.

Optionally, the first access network device can also broadcast the SL configuration information of the second cell. The first access network device always broadcasts the SL configuration information of the second cell, or the first access network device broadcasts the SL configuration information of the second cell on demand, where the SL configuration information of the second cell is consistent with the second SL configuration. The information (SL configuration information corresponding to adjacent cells) can be sent together, for example, in the same SIB. Alternatively, the SL configuration information of the second cell and the second SL configuration information may be sent separately, for example, in different SIBs, and this application does not limit this.

If the terminal's SL communication delay requirement is relatively high, the first access network device can be used to broadcast the second SL configuration information all the time. If air interface resources are tight, the first access network device can be used to broadcast the second SL configuration on demand. way of information. In this way, the SL resource configuration required by the terminal can be flexibly realized.

Optionally, before the terminal camps on the first neighboring cell, the terminal obtains the first SL resource according to the first SL configuration information. Wherein, if the second cell supports the SL communication required by the terminal, the first SL configuration information is the SL configuration information of the second cell. Or, if the second cell does not support the SL communication required by the terminal, or if the terminal does not find a suitable cell to camp on before camping on the first adjacent cell, that is, there is no source service. When entering a cell, the first SL configuration information is pre-configured SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device, or can be pre-stored in the terminal chip. .

When the terminal needs to reselect to the first neighboring cell, the terminal obtains the second SL resource according to the second SL configuration information. It can be understood that when the terminal is camping in the second cell, the second SL configuration information corresponding to the first neighboring cell is obtained from the system message of the second cell.

For example, the second SL configuration information includes abnormal resource pool configuration information of the first neighboring cell, and the terminal can obtain the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell. Then, after the transmission resource pool configuration information of the first neighboring cell can be further obtained, and the sensing result of the transmission resource pool is obtained, the second SL resource is obtained based on the transmission resource pool configuration information of the first neighboring cell. For another example, the second SL configuration information includes the transmission resource pool configuration information of the first neighboring cell. Before the terminal camps on the first neighboring cell, the sensing result of the transmission resource pool is obtained in advance. After finding a neighboring cell, the second SL resource is obtained according to the transmission resource pool configuration information of the first neighboring cell. For another example, the second configuration SL information includes the abnormal resource pool configuration information of the first neighboring cell and the transmitting resource pool configuration information of the first neighboring cell. The terminal may first obtain the abnormal resource pool configuration information of the first neighboring cell. The third SL resource, after obtaining the transmission resource pool configuration information of the first neighboring cell and obtaining the sensing result of the transmission resource pool of the first neighboring cell, is based on the transmission resource pool configuration information of the first neighboring cell. Obtain the second SL resource.

Optionally, the wireless communication method provided in Figure 4 also includes:

S430: Before the terminal receives the second sidelink SL configuration information from the first access network device, the second access network device sends the second SL configuration information to the first access network device.

It can be seen that the first access network device obtains the second SL configuration information of the second access network device in advance, so that it can send the SL configuration information of the first neighboring cell to the terminal in the second cell.

Optionally, the wireless communication method provided in Figure 4 also includes:

S440: The first access network device sends the SL configuration information of the second cell to the second access network device. In the embodiment of the present application, there is no limit on the sending time of step S440. For example, step S440 may be before or after any step from step S410 to step S430. Therefore, the first neighboring cell can send the SL configuration information of the second cell to the terminal resident in the first neighboring cell. Optionally, the first access network device can also send the SL configuration information of the second cell to other access network devices, such as the third access network device, even if the third access network device does not send the third access network device The SL configuration information of the corresponding cell is sent to the first access network device, and the first access network device may also send the SL configuration information of the second cell to the third access network device.

It can be seen that by using the method of the embodiment of the present application, the serving cell can not only broadcast the second SL configuration information of the neighboring cell to the terminal, but also broadcast the SL configuration information of the own cell to the terminal, so that the terminal can The second SL configuration information of the target cell after reselection is obtained, thereby ensuring the continuity of SL communication of the terminal during the cell reselection process.

It should be noted that the first access network device to which the second cell belongs and the second access network device to which the first adjacent cell belongs shown in Figure 5 may be different access network devices or they may be the same. The access network equipment is not limited in the embodiments of this application.

This application also provides a wireless communication method, which can also solve the problem of SL communication interruption of the terminal during the cell reselection process. Assume that the current serving cell of the terminal is the second cell, as shown in Figures 6 and 7. The terminal resides in the second cell, and the first access network device provides services for the second cell. Network equipment provides services to the first neighboring cell:

S610: The first system message SI broadcast by the second access network device. The first SI includes first requested configuration information, and the first requested configuration information corresponds to a second SI (for example, SIB3). The second SI includes the SL configuration information of the first adjacent cell.

The SL configuration information of the first adjacent cell includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The descriptions of the resource pool configuration information, SLRB configuration information, and synchronization configuration information are the same as in the embodiment shown in Figure 3 above, and will not be described again here.

Optionally, the first system message SI is SIB1. The second access network device broadcasts the SIB1 through the first adjacent cell.

S620: The terminal receives the first SI and determines the first request configuration information corresponding to the second SI according to the first SI. The first request configuration information is used to indicate the first information used by the request for the second SI and the first time-frequency resource for sending the first information.

S630: The terminal sends the first information to the second access network device on the first time-frequency resource. For example, the first information may be a preamble, and the first time-frequency resource may be a first random access resource. The terminal initiates random access based on the first information corresponding to the second SI in the first SI and the first time-frequency resource, that is, the terminal sends the first information to the second access network device on the first time-frequency resource, The second access network device may be instructed to broadcast the second SI through the first neighboring cell.

Optionally, when the target cell after terminal cell reselection is the first neighboring cell, before the terminal determines that the first neighboring cell is the target cell, the terminal sends the first SI to the first neighboring cell according to the first SI. information; or, after the terminal determines that the first neighboring cell is the target cell and before the terminal camps on the first neighboring cell (target cell), the terminal sends the first information to the first neighboring cell according to the first SI. It should be noted that the time when the terminal sends the first message to the first adjacent cell can be determined by the terminal itself, but in order to reduce the interruption delay, the first information needs to be sent before camping on the target cell.

Optionally, the wireless communication method provided by the embodiment of this application also includes:

S640: The second access network device sends the SL configuration information of the first neighboring cell to the terminal according to the first information.

For example, the second access network device may send the SL configuration information of the first neighboring cell to the terminal in the second SI, which can be understood as the second access network device broadcasts the second SI through the first neighboring cell, so The second SI includes SL configuration information of the first neighboring cell. Optionally, the second SI may be another SIB other than SIB1, such as SIB3 in the example.

Optionally, the wireless communication method provided by the embodiment of this application also includes:

S640': The terminal receives the SL configuration information of the first neighboring cell.

Optionally, the wireless communication method provided by the embodiment of this application also includes:

S650: The terminal obtains the SL resources of the first neighboring cell according to the SL configuration information of the first neighboring cell.

It should be noted that the specific time for the terminal to obtain the SL resources of the first neighboring cell according to the SL configuration information of the first neighboring cell may be determined according to the network implementation. For example, the terminal may be camped on the first neighboring cell. , obtaining the SL resources of the first neighboring cell according to the SL configuration information of the first neighboring cell. For another example, when the terminal receives the second SL configuration information, it can obtain the SL resources of the first neighboring cell based on the SL configuration information of the first neighboring cell. This application provides a method for the terminal to obtain the SL resources of the first neighboring cell based on the SL configuration information of the first neighboring cell. The specific time at which the SL configuration information of the cell obtains the SL resources of the first adjacent cell is not limited. When the terminal needs to reselect to the first neighboring cell, the terminal can obtain the second SL resource according to the SL configuration information of the first neighboring cell. It can be understood that when the terminal camps on the second cell, it can obtain the SL configuration information of the first neighboring cell corresponding to the first neighboring cell.

Optionally, before the terminal camps on the first neighboring cell, the terminal obtains the first SL resource according to the first SL configuration information. Wherein, if the second cell supports the SL communication required by the terminal, the first SL configuration information is the SL configuration information of the second cell. Or, if the second cell does not support the SL communication required by the terminal, or if the terminal does not find a suitable cell to camp on before camping on the first adjacent cell, that is, there is no source service. When entering a cell, the first SL configuration information is pre-configured SL configuration information, where the pre-configured SL configuration information can be dynamically pre-configured by the core network device, or can be pre-stored in the terminal chip. .

For example, the SL configuration information of the first neighboring cell includes abnormal resource pool configuration information of the first neighboring cell, and the terminal can obtain the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell. Then, after the transmission resource pool configuration information of the first neighboring cell can be further obtained, and the sensing result of the transmission resource pool is obtained, the third SL resource is obtained based on the transmission resource pool configuration information of the first neighboring cell. For another example, the SL configuration information of the first adjacent cell includes the transmission resource pool configuration information of the first adjacent cell. Before the terminal camps on the first adjacent cell, the sensing result of the transmission resource pool is obtained in advance. After staying in the first neighboring cell, the second SL resource is obtained according to the transmission resource pool configuration information of the first neighboring cell. For another example, the second configuration SL information includes the abnormal resource pool configuration information of the first neighboring cell and the transmitting resource pool configuration information of the first neighboring cell. The terminal may first obtain the abnormal resource pool configuration information of the first neighboring cell. The third SL resource, after obtaining the transmission resource pool configuration information of the first neighboring cell and obtaining the sensing result of the transmission resource pool of the first neighboring cell, is based on the transmission resource pool configuration information of the first neighboring cell. Obtain the second SL resource.

It can be seen that the terminal can send the required SL communication request (preamble) to the first neighboring cell before cell reselection, so as to obtain the SL configuration information of the first neighboring cell in advance. The cell can be the target cell of the terminal. Then when the terminal reselects to the first neighboring cell, it can use the SL configuration information of the first neighboring cell to obtain the SL resources of the first neighboring cell, thereby effectively solving the problem of the terminal in the cell. The problem of SL communication interruption during the process.

It should be noted that the second cell shown in Figure 7 belongs to the first access network device, and the first adjacent cell belongs to the second access network device, that is, it belongs to different access network devices. Optionally, the second cell It may also belong to the same access network device as the first neighboring cell, such as the first access network device as shown in Figure 7. This embodiment of the present application does not limit this.

The wireless communication method, device or equipment provided by this application is suitable for situations where the source serving cell (the second cell as shown in Figure 3) and the target cell (the first cell as shown in Figure 3) do not belong to the same validity area (validity). area). The definition of the effective area is the same as the relevant standard definition and will not be repeated here. For example, if the system information area ID (systemInforamtionAreaID) of the SI corresponding to the SL in the source cell is different from the system information area ID (systemInforamtionAreaID) of the SI corresponding to the SL in the target cell, it is considered that the SI corresponding to the SL in the source cell is the same as the system information area ID corresponding to the SL in the target cell. SI belongs to different valid areas. Or, if the value tag (valueTag) of the SI corresponding to the SL in the source cell is different from the value tag (valueTag) of the SI corresponding to the SL in the target cell, it is considered that the SI corresponding to the SL in the source cell and the SI corresponding to the SL in the target cell belong to different categories. effective area.

It can be seen from the above that by using the wireless communication method provided by any embodiment of the present application, the problem of SL communication interruption when the terminal reselects a cell under the on-demand mechanism can be solved.

The method of the embodiment of the present application is described in detail above. The communication device and related equipment of the embodiment of the present application are provided below.

Figure 8 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. The communication device is used to perform the steps performed by the terminal 20 in the method embodiment corresponding to Figure 3. The device may include: an acquisition unit 810 and a processing unit. 820,

The processing unit 820 is configured to obtain the first SL resource according to the first SL configuration information when the obtaining unit 810 does not obtain the sidelink SL configuration information of the first cell. The first SL configuration information is current SL configuration information.

The first SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

Optionally, when the second cell supports the SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell; or, when the second cell does not support the SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell. One SL configuration information is preconfigured SL configuration information.

In one implementation, the synchronization configuration information includes synchronization source information. When the synchronization source indicated by the synchronization source information is an access network device, the device is synchronized with the second cell, or the device is synchronized with the first cell. Cell synchronization. It can be understood that when the device is camped in the first cell and does not obtain the SL configuration parameters of the first cell, it can synchronize with either the first cell or the second cell.

In another implementation, the synchronization configuration information includes synchronization source information. When the synchronization source indicated by the synchronization source information is GNSS, the device is synchronized with the GNSS. Further, the synchronization configuration information also includes DFN timing parameters, where the DFN timing parameters are used to determine the synchronization timing between the device and the GNSS. Then the DFN timing parameters are the DFN timing parameters of the first cell, or the DFN timing parameters are the DFN timing parameters of the second cell. It can be understood that when the device is camped in the first cell and does not obtain the SL configuration parameters of the first cell, the DFN timing parameters of the second cell are used to synchronize with the GNSS; or, when the device obtains the SL configuration parameters of the first cell In the case of SL configuration parameters, use the DFN timing parameters of the first cell to synchronize with GNSS.

In one implementation, the resource pool configuration information includes one or more of the following: sending resource pool configuration information, receiving resource pool configuration information, or abnormal resource pool configuration information.

It can be seen that when the device does not obtain the SL configuration information of the target cell (the first cell), it can obtain the first SL resource according to the first SL configuration information, thereby ensuring the communication continuity of the SL.

Optionally, the device shown in Figure 8 may be a terminal or a chip device in the terminal.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 8 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figure 3 and the foregoing content, and will not be described again here.

In an implementation manner, the relevant functions implemented by each unit in Figure 8 can be implemented in combination with a processor and a transceiver. Figure 9 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention. The device includes a transceiver 910, a processor 920, and optionally a memory 930. The processor 920, the transceiver 910, and the memory 930 pass One or more communication bus connections.

The processor 920 is configured to support the device to perform steps performed by the terminal in the method described in FIG. 3 . The processor 920 may be a central processing unit (CPU), a network processor (NP), a hardware chip, or any combination thereof.

The memory 930 is used to store program codes and the like. The memory 930 may include volatile memory (volatile memory), such as random access memory (RAM); the memory 930 may also include non-volatile memory (non-volatile memory), such as read-only memory (read-only memory). memory (ROM), flash memory (flash memory), hard disk drive (HDD) or solid-state drive (SSD); the memory 930 may also include a combination of the above types of memory.

Transceiver 910, processor 920 can call program code stored in memory 930 to perform the following operations:

When the transceiver 910 does not obtain the sidelink SL configuration information of the first cell, it obtains the first SL resource according to the first SL configuration information, and the first SL configuration information is the current SL configuration information.

The first SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

Optionally, when the second cell supports the SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell; or, when the second cell does not support the SL communication required by the device, the first SL configuration information is the SL communication required by the device. One SL configuration information is preconfigured SL configuration information.

In one implementation, the synchronization configuration information includes synchronization source information. When the synchronization source indicated by the synchronization source information is an access network device, the device is synchronized with the second cell, or the device is synchronized with the first cell. Cell synchronization. It can be understood that when the device camps on the first cell and does not obtain the SL configuration parameters of the first cell, it can synchronize with the first cell or the second cell.

In another implementation manner, the synchronization configuration information includes synchronization source information. When the synchronization source indicated by the synchronization source information is GNSS, the device is synchronized with the GNSS. Further, the synchronization configuration information also includes DFN timing parameters, where the DFN timing parameters are used to determine the synchronization timing between the device and the GNSS. Then the DFN timing parameters are the DFN timing parameters of the first cell, or the DFN timing parameters are the DFN timing parameters of the second cell. It can be understood that when the device is camped in the first cell and does not obtain the SL configuration parameters of the first cell, the DFN timing parameters of the second cell are used to synchronize with the GNSS; or, when the device obtains the SL configuration parameters of the first cell In the case of SL configuration parameters, use the DFN timing parameters of the first cell to synchronize with GNSS.

In one implementation, the resource pool configuration information includes one or more of the following: sending resource pool configuration information, receiving resource pool configuration information, or abnormal resource pool configuration information.

It can be seen that when the device does not obtain the SL configuration information of the target cell (the first cell), it can obtain the first SL resource according to the first SL configuration information, thereby ensuring the communication continuity of the SL.

Optionally, the device shown in Figure 9 can be a terminal or a chip in the terminal.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 9 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figure 3 and the foregoing content, and will not be described again here.

Figure 10 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. The communication device is used to perform the steps performed by the terminal of the method embodiment corresponding to Figure 4 and Figure 5. The current serving cell (source serving cell) of the device It is the second cell, or the device is currently camped in the second cell. The second cell is served by the first access network equipment. The adjacent cells are adjacent cells of the second cell. The adjacent cells include The first adjacent cell may be any adjacent cell of the second cell, and the first adjacent cell is served by the second access network equipment. The device may include: receiving unit 1010,

The receiving unit 1010 is configured to receive at least one second sidelink SL configuration information from the second cell, where the second SL configuration information includes adjacent cell identification information and the SL configuration corresponding to the adjacent cell identification information. information.

Wherein, the second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The device optionally further includes a processing unit 1020, configured to obtain a second SL resource according to the second SL configuration information.

In one embodiment, the adjacent cell includes a first adjacent cell. When the device needs to camp on the first adjacent cell for cell reselection, the processing unit 1020 is further configured to: Before the first neighboring cell, the first SL resource is obtained according to the first SL configuration information, where the first SL configuration information is the current SL configuration information. Or the processing unit 1020 is configured to, when the device camps on the first neighboring cell, obtain the second SL resource according to the second SL configuration information.

In one implementation, the first SL configuration information includes: when the second cell supports the SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell; or, in the second cell, the first SL configuration information is the SL configuration information of the second cell. When the cell does not support the SL communication required by the device, the first SL configuration information is preconfigured SL configuration information.

In one implementation, the second SL configuration information includes abnormal resource pool configuration information, and the processing unit 1020 is further configured to:

Before the device camps on the first neighboring cell and before the transmit resource pool monitoring result of the first neighboring cell is obtained, the third SL resource is obtained according to the abnormal resource pool configuration information. Wherein, the sending resource pool is a resource pool corresponding to the sending resource pool configuration information.

It can be seen that by using the wireless communication device as an example in the embodiment of the present application, the device can receive the SL configuration information of the neighboring cell (ie, the second SL configuration information) from the current serving cell, and then the device needs to perform cell reselection. When camping on the neighboring cell, the SL resource of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Optionally, the device shown in Figure 10 can be a terminal or a chip in the terminal.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 10 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 4 and 5 and the foregoing content, and will not be described again here.

In an implementation manner, the relevant functions implemented by each unit in Figure 10 can be implemented in combination with a processor and a transceiver. Figure 11 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention. The device includes a transceiver 1110, a processor 1120, and optionally a memory 1130. The processor 1120, the transceiver 1110, and the memory 1130 pass One or more communication bus connections.

The processor 1120 is configured to support the device to perform the methods described in Figures 4 and 5 and the steps performed by the terminal in the foregoing content. The processor 1120 can be a CPU, NP, hardware chip or any combination thereof.

The memory 1130 is used to store program codes and the like. The memory 1130 may include volatile memory, such as RAM; the memory 1130 may also include non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1130 may also include a combination of the above types of memories.

The transceiver 1110 is configured to receive at least one second sidelink SL configuration information from the second cell, where the second SL configuration information includes adjacent cell identification information and the SL configuration corresponding to the adjacent cell identification information. information.

Wherein, the second SL configuration information includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The transceiver 1110 and the processor 1120 can call the program code stored in the memory 1130 to execute: obtain the second SL resource according to the second SL configuration information.

In one implementation, the adjacent cell includes a first adjacent cell. When the device needs to camp on the first adjacent cell for cell reselection, the processor 1120 is further configured to: when the device is camped on Stay in front of the first neighboring cell, and obtain the first SL resource according to the first SL configuration information, where the first SL configuration information is the current SL configuration information; or the processor 1120 is configured to, when the device is camped on When referring to the first neighboring cell, the second SL resource is obtained according to the second SL configuration information.

In one implementation, the first SL configuration information includes: when the second cell supports the SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell; or, in the second cell, the first SL configuration information is the SL configuration information of the second cell. When the cell does not support the SL communication required by the device, the first SL configuration information is preconfigured SL configuration information.

In one implementation, the second SL configuration information includes abnormal resource pool configuration information, and the processor 1120 is further configured to:

Before the device camps on the first neighboring cell and before the transmit resource pool monitoring result of the first neighboring cell is obtained, the third SL resource is obtained according to the abnormal resource pool configuration information. Wherein, the sending resource pool is a resource pool corresponding to the sending resource pool configuration information.

It can be seen that by using the wireless communication device as an example in the embodiment of the present application, the device can receive the SL configuration information of the adjacent cell (that is, the second SL configuration information) from the current serving cell, and then the device needs to perform cell reselection. When camping on the neighboring cell, the SL resource of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Optionally, the device shown in Figure 11 can be a terminal or a chip in the terminal.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 11 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 4 and 5 and the foregoing content, and will not be described again here.

Figure 12 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. The communication device is used to perform the steps performed by the first access network device in the method embodiment corresponding to Figure 4 and Figure 5. The terminal is currently serving a cell. (Source serving cell) is the second cell, or the terminal is currently camped in the second cell. The second cell is served by the device. The adjacent cell is an adjacent cell of the second cell. The adjacent cell It includes a first neighboring cell, which may be any neighboring cell of the second cell, and the first neighboring cell is served by the second access network device. The device may include: a sending unit 1210,

The sending unit 1210 is configured to send at least one second sidelink SL configuration information. The second SL configuration information includes adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information. The second SL configuration information is used to configure the second SL resource for the terminal, including one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

In one implementation, the device further includes an acquisition unit 1220,

The obtaining unit 1220 is configured to obtain the second SL configuration information from the neighboring cell before the sending unit 1210 sends the second SL configuration information to the terminal.

In one implementation, the sending unit 1210 is further configured to send the SL configuration information of the second cell to the second access network device. The second cell is the cell where the terminal is currently camped.

It can be seen that the device can send the second SL configuration information (configuration information of the adjacent cell) to the terminal in the terminal's current serving cell, so that the terminal can obtain the SL configuration information of the adjacent cell in time (or in advance), effectively solving the problem. The problem of SL communication interruption described in this application is solved.

Optionally, the device shown in Figure 12 may be an access network device or a chip in the access network device.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 12 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 4 and 5 and the foregoing content, and will not be described again here.

In an implementation manner, the relevant functions implemented by each unit in Figure 12 can be implemented in combination with a processor and a transceiver. Figure 13 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention. The device includes a transceiver 1310, a processor 1320, and optionally a memory 1330. The processor 1320, the transceiver 310, and the memory 1330 are connected through a or multiple communication bus connections.

The processor 1320 is configured to support the device to perform steps performed by the first access network device in the methods described in Figures 4 and 5. The processor 1320 can be a CPU, NP, hardware chip or any combination thereof.

The memory 1330 is used to store program codes and the like. The memory 1330 may include volatile memory, such as RAM; the memory 1330 may also include non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1330 may also include a combination of the above types of memories.

The transceiver 1310 sends at least one second sidelink SL configuration information. The second SL configuration information includes adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information. The second SL configuration information is used to configure the second SL resource for the terminal, including one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The transceiver 1310 is also configured to obtain the second SL configuration information from the neighboring cell before the transceiver 1310 sends the second SL configuration information to the terminal.

It can be seen that the device can send the second SL configuration information (configuration information of the adjacent cell) to the terminal in the terminal's current serving cell, so that the terminal can obtain the SL configuration information of the adjacent cell in time or in advance, effectively solving this problem. Apply for the SL communication interruption issue described.

Optionally, the device shown in Figure 13 may be an access network device or a chip in the access network device.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 13 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 4 and 5 and the foregoing content, and will not be described again here.

Figure 14 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. The communication device is used to perform the steps performed by the terminal in the method embodiment corresponding to Figure 6 and Figure 7. The device resides in the second cell. , the first access network device provides services for the second cell, and the second access network device provides services for the first neighboring cell. The device may include: a receiving unit 1410, a determining unit 1420, and a sending unit 1430,

The receiving unit 1410 is configured to receive the first system message SI from the second access network device.

The first SI includes first requested configuration information, and the first requested configuration information corresponds to a second SI (for example, SIB3), and the second SI includes SL configuration information of the first neighboring cell. For example, the first system message SI is SIB1. The second access network device broadcasts the SIB1 through the first adjacent cell.

The determining unit 1420 determines the first request configuration information corresponding to the second SI based on the first SI. The first request configuration information is used to indicate the first information used by the request for the second SI and the first time-frequency resource for sending the first information. For example, the first information may be a preamble, and the first time-frequency resource may be a first random access resource.

The sending unit 1430 is configured to send the first information to the second access network device on the first time-frequency resource.

The terminal initiates random access based on the first information corresponding to the second SI in the first SI and the first time-frequency resource, that is, the terminal sends the first information to the second access network device on the first time-frequency resource, The second access network device may be instructed to broadcast the second SI through the first neighboring cell.

Optionally, the receiving unit 1410 of the wireless communication device shown in Figure 14 is also configured to receive the SL configuration information of the first neighboring cell. Wherein, the SL configuration information of the first adjacent cell is the SL configuration information sent by the second access network device to the device according to the first information.

Optionally, the wireless communication device described in Figure 14 also includes an acquisition unit 1440,

The obtaining unit 1440 is configured to obtain the SL resources of the first neighboring cell according to the SL configuration information of the first neighboring cell.

It can be seen that by using the wireless communication device exemplified by the embodiments of the present application, the device's current serving cell can receive the SL configuration information sent by the neighboring cell, and then the device will camp on the corresponding cell when it needs to perform cell reselection. When it is a neighboring cell, the SL resources of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Optionally, the device shown in Figure 14 may be a terminal or a chip in the terminal.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 14 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 6 and 7 and the foregoing content, and will not be described again here.

In an implementation manner, the relevant functions implemented by each unit in Figure 14 can be implemented in combination with a processor and a transceiver. Figure 15 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention. The device includes a transceiver 1510, a processor 1520, and optionally a memory 1530. The processor 1520, the transceiver 1510, and the memory 1530 pass One or more communication bus connections.

The processor 1520 is configured to support the device to perform steps performed by the terminal in the methods described in FIG. 6 and FIG. 7 . The processor 1520 can be a CPU, NP, hardware chip or any combination thereof.

The memory 1530 is used to store program codes and the like. The memory 1530 may include volatile memory, such as RAM; the memory 1530 may also include non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1530 may also include a combination of the above types of memories.

The transceiver 1510 is configured to receive the first system message SI from the second access network device.

The first SI includes first requested configuration information, and the first requested configuration information corresponds to a second SI (for example, SIB3), and the second SI includes SL configuration information of the first adjacent cell.

The transceiver 1510 and the processor 1520 can call the program code stored in the memory 1530 to execute: determine the first request configuration information corresponding to the second SI according to the first SI.

The first request configuration information is used to indicate the first information used by the request for the second SI and the first time-frequency resource for sending the first information. For example, the first information may be a preamble, and the first time-frequency resource may be a first random access resource.

The transceiver 1510 is also configured to send the first information to the second access network device on the first time-frequency resource.

The device initiates random access based on the first information corresponding to the second SI in the first SI and the first time-frequency resource, that is, the device sends the first information to the second access network device on the first time-frequency resource, The second access network device may be instructed to broadcast the second SI through the first neighboring cell.

Optionally, the transceiver 1510 of the wireless communication device described in Figure 15 is also configured to receive the SL configuration information of the first neighboring cell. The SL configuration information of the first neighboring cell is the SL configuration information sent by the second access network device to the device based on the first information.

Optionally, the processor 1520 of the wireless communication device described in Figure 15 is also used to:

Used to obtain the SL resources of the first neighboring cell according to the SL configuration information of the first neighboring cell.

It can be seen that by using the wireless communication device exemplified in the embodiments of the present application, when the device can receive the SL configuration information of the neighboring cell from the neighboring cell, the device will camp on the neighboring cell when it needs to perform cell reselection. When a cell is connected, the SL resources of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Optionally, the device shown in Figure 15 can be a terminal or a chip in the terminal.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 15 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 6 and 7 and the foregoing content, and will not be described again here.

Figure 16 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. The communication device is used to perform the steps performed by the second network device in the method embodiment corresponding to Figure 6 and Figure 7. The device may include: sending unit 1610 and receiving unit 1620,

The sending unit 1610 is used to send the first system message SI.

The first SI includes first requested configuration information, the first requested configuration information corresponds to the second SI (for example, SIB3), and the second SI includes the SL configuration information of the first neighboring cell. The first request configuration information is used to indicate the first information used by the request for the second SI and the first time-frequency resource for sending the first information. For example, the first system message SI is SIB1. The device broadcasts the SIB1 through the first neighboring cell.

The receiving unit 1620 is configured to receive the first information from the terminal on the first time-frequency resource. For example, the first information may be a preamble, and the first time-frequency resource may be a first random access resource.

Optionally, the device further includes a determining unit 1630, configured to determine the second SI according to the received first information.

Optionally, the sending unit 1610 is also used to:

Send the second SI to the terminal. The second SI includes SL configuration information of the first neighboring cell.

It can be seen that by using the wireless communication device exemplified by the embodiments of the present application, even if the terminal is camped in the second cell, the SL configuration information of the first neighboring cell can be sent to the terminal according to the first information sent by the terminal, so that even if the terminal The SL configuration information of the first neighboring cell can also be obtained without camping in the first neighboring cell, which also solves the problem of SL communication interruption described in this application.

Optionally, the device shown in Figure 16 can be a terminal or a chip in the terminal.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 16 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 6 and 7 and the foregoing content, and will not be described again here.

In an implementation manner, the relevant functions implemented by each unit in Figure 16 can be implemented in combination with a processor and a transceiver. Figure 17 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present invention. The device includes a transceiver 1710, a processor 1720, and optionally a memory 1730. The processor 1720, the transceiver 1710, and the memory 1730 pass One or more communication bus connections.

The processor 1720 is configured to support the device to perform the steps performed by the second access network device in the methods described in FIG. 6 and FIG. 7 . The processor 1720 can be a CPU, NP, hardware chip or any combination thereof.

The memory 1730 is used to store program codes and the like. The memory 1730 may include volatile memory, such as RAM; the memory 1730 may also include non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 1730 may also include a combination of the above types of memories.

Transceiver 1710, configured to send the first system message SI.

The first SI includes first requested configuration information, the first requested configuration information corresponds to the second SI (for example, SIB3), and the second SI includes the SL configuration information of the first neighboring cell. The first request configuration information is used to indicate the first information used by the request for the second SI and the first time-frequency resource for sending the first information. For example, the first system message SI is SIB1. The device broadcasts the SIB1 through the first neighboring cell.

The transceiver 1710 is also configured to receive the first information from the terminal on the first time-frequency resource.

For example, the first information may be a preamble, and the first time-frequency resource may be a first random access resource.

Optionally, the transceiver 1710 and the processor 1720 can call the program code stored in the memory 1730 to execute: determine the second SI according to the received first information.

Optionally, the transceiver 1710 is also used to send the second SI to the terminal. The second SI includes SL configuration information of the first neighboring cell.

It can be seen that by using the wireless communication device exemplified by the embodiments of the present application, even if the terminal is camped in the second cell, the SL configuration information of the first neighboring cell can be sent to the terminal according to the first information sent by the terminal, so that even if the terminal The SL configuration information of the first neighboring cell can also be obtained without camping in the first neighboring cell, which also solves the problem of SL communication interruption described in this application.

Optionally, the device shown in Figure 17 may be an access network device or a chip in the access network device.

It should be noted that the content not mentioned in the embodiment corresponding to Figure 17 and the specific implementation manner and beneficial effects of the execution steps of each unit can be found in the embodiment shown in Figures 6 and 7 and the foregoing content, and will not be described again here.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disk, storage disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.

Claims (23)

1. A method of wireless communication, comprising, in the event that a terminal camps on a first cell:

under the condition that the terminal does not acquire the side link SL configuration information of the first cell, the terminal acquires first SL resources according to first SL configuration information, wherein the first SL configuration information is current SL configuration information; the source service cell of the terminal is a second cell, and the first SL configuration information is preconfigured SL configuration information which is dynamically preconfigured by core network equipment or is pre-stored in a chip of the terminal under the condition that the second cell does not support SL communication required by the terminal; the first SL configuration information includes one or more of: resource pool configuration information, side-uplink radio bearer, SLRB, configuration information, or synchronization configuration information.

2. The method according to claim 1, wherein the first SL configuration information is SL configuration information of the second cell in case the second cell supports SL communication required for the terminal.

3. The method according to claim 1 or 2, wherein in case the terminal does not acquire side-uplink, SL, configuration information of the first cell, the terminal acquires the first SL resource according to the first SL configuration information, comprising:

The synchronization configuration information comprises synchronization source information, and the terminal is synchronized with the second cell or the terminal is synchronized with the first cell under the condition that the synchronization source indicated by the synchronization source information is access network equipment.

4. The method according to claim 1 or 2, wherein in case the terminal does not acquire side-uplink, SL, configuration information of the first cell, the terminal acquires the first SL resource according to the first SL configuration information, comprising:

the synchronization configuration information comprises synchronization source information, and when the synchronization source indicated by the synchronization source information is a Global Navigation Satellite System (GNSS), the terminal is synchronized with the GNSS.

5. The method of claim 4, wherein the synchronization configuration information further comprises a direct frame number, DFN, timing parameter, the DFN timing parameter being used to determine the terminal and GNSS synchronization timing;

the DFN timing parameter is a DFN timing parameter of the first cell, or the DFN timing parameter is a DFN timing parameter of the second cell.

6. The method of claim 1, wherein the resource pool configuration information comprises one or more of: the method comprises the steps of sending resource pool configuration information, receiving resource pool configuration information or abnormal resource pool configuration information.

7. A method of wireless communication, wherein a terminal resides in a second cell, comprising:

the terminal receives at least one second side uplink SL configuration information from the second cell, wherein the second SL configuration information comprises adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information, the adjacent cell comprises a first adjacent cell, and under the condition that the terminal needs to reside in the first adjacent cell when performing cell reselection, the terminal acquires a first SL resource according to the first SL configuration information before residing in the first adjacent cell, and the first SL configuration information is current SL configuration information; in the case that the second cell does not support SL communication required for the terminal, the first SL configuration information is preconfigured SL configuration information; the pre-configured SL configuration information is dynamically pre-configured by core network equipment or pre-stored in a chip of the terminal; the second SL configuration information includes one or more of: resource pool configuration information, side-uplink radio bearer, SLRB, configuration information, or synchronization configuration information.

8. The method of claim 7, wherein the neighboring cell comprises a first neighboring cell, and wherein the terminal is further configured to camp on the first neighboring cell if cell reselection is required.

And when the terminal resides in the first adjacent cell, the terminal acquires a second SL resource according to the second SL configuration information.

9. The method according to claim 8, wherein the first SL configuration information is SL configuration information of a second cell in case the second cell supports SL communication required for the terminal.

10. The method according to any one of claims 7 to 9, wherein the second SL configuration information comprises abnormal resource pool configuration information and transmission resource pool configuration information,

and before the terminal resides in the first adjacent cell and does not acquire a monitoring result of a sending resource pool of the first adjacent cell, the terminal acquires a third SL resource according to the abnormal resource pool configuration information, wherein the sending resource pool is a resource pool corresponding to the sending resource pool configuration information.

11. A wireless communications apparatus, the apparatus residing in a first cell, comprising: an acquisition unit and a processing unit,

the processing unit is configured to, when the acquiring unit does not acquire the side uplink SL configuration information of the first cell, acquire a first SL resource according to first SL configuration information, where the first SL configuration information is current SL configuration information; the source service cell of the device is a second cell, and the first SL configuration information is preconfigured SL configuration information under the condition that the second cell does not support SL communication required by the device, wherein the preconfigured SL configuration information is dynamically preconfigured by a core network device or is pre-stored in a chip of the device; the first SL configuration information includes one or more of: resource pool configuration information, side-uplink radio bearer, SLRB, configuration information, or synchronization configuration information.

12. The apparatus of claim 11, wherein the first SL configuration information is SL configuration information for the second cell if the second cell supports SL communication required by the apparatus.

13. The apparatus according to claim 11 or 12, wherein the acquiring, in a case where the acquiring unit does not acquire the side-uplink SL configuration information of the first cell, acquires the first SL resource according to the first SL configuration information, includes:

the synchronization configuration information includes synchronization source information, and the apparatus is synchronized with the second cell or the apparatus is synchronized with the first cell in the case that the synchronization source indicated by the synchronization source information is an access network device.

14. The apparatus according to claim 11 or 12, wherein the acquiring, in a case where the acquiring unit does not acquire the side-uplink SL configuration information of the first cell, acquires the first SL resource according to the first SL configuration information, includes:

the synchronization configuration information includes synchronization source information, and when the synchronization source indicated by the synchronization source information is a global navigation satellite system GNSS, the apparatus synchronizes with the GNSS.

15. The apparatus of claim 14, wherein the device comprises a plurality of sensors,

the synchronization configuration information further includes a direct frame number, DFN, timing parameter, the DFN timing parameter being used to determine a synchronization timing of the device with a GNSS;

the DFN timing parameter is a DFN timing parameter of the first cell, or the DFN timing parameter is a DFN timing parameter of the second cell.

16. The apparatus of claim 11, wherein the resource pool configuration information comprises one or more of: the method comprises the steps of sending resource pool configuration information, receiving resource pool configuration information or abnormal resource pool configuration information.

17. A wireless communications apparatus, the apparatus residing in a second cell, comprising: the receiving unit is configured to receive the received signal,

the receiving unit is configured to receive at least one second side uplink SL configuration information from the second cell, where the second SL configuration information includes neighboring cell identification information and SL configuration information corresponding to the neighboring cell identification information, and the neighboring cell includes a first neighboring cell;

in case the apparatus needs to camp on the first neighboring cell for cell reselection, the apparatus further comprises a processing unit;

The processing unit is configured to obtain a first SL resource according to first SL configuration information before the apparatus resides in the first neighboring cell, where the first SL configuration information is current SL configuration information; wherein, in case that the second cell does not support SL communication required by the apparatus, the first SL configuration information is preconfigured SL configuration information, which is dynamically preconfigured by a core network device or is pre-stored in a chip of the apparatus; the second SL configuration information includes one or more of: resource pool configuration information, side-uplink radio bearer, SLRB, configuration information, or synchronization configuration information.

18. The apparatus of claim 17, wherein the resource pool configuration information comprises abnormal resource pool configuration information and transmit resource pool configuration information, the processing unit further configured to:

and before the device resides in the first adjacent cell and does not acquire a monitoring result of a sending resource pool of the first adjacent cell, acquiring a third SL resource according to the abnormal resource pool configuration information, wherein the sending resource pool is a resource pool corresponding to the sending resource pool configuration information.

19. A wireless communications apparatus, comprising: a processor coupled with a memory for storing instructions for execution by the processor to cause the wireless communication device to perform the method of any one of claims 1 to 6.

20. A wireless communications apparatus, comprising: a processor coupled with a memory for storing instructions for execution by the processor to cause the wireless communication device to perform the method of any of claims 7 to 10.

21. A computer readable storage medium comprising computer readable instructions which, when read and executed by a communication device, cause the communication device to perform the method of any one of claims 1 to 6.

22. A computer readable storage medium comprising computer readable instructions which, when read and executed by a communication device, cause the communication device to perform the method of any of claims 7 to 10.

23. A communication system, the communication system comprising: the device of any one of claims 11 to 16, 19, and/or the device of any one of claims 17 to 18, 20.