CN114391269B

CN114391269B - Wireless communication method and device

Info

Publication number: CN114391269B
Application number: CN201980100158.7A
Authority: CN
Inventors: 彭文杰; 王君; 戴明增
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2023-09-22
Anticipated expiration: 2039-09-30
Also published as: CN114391269A; WO2021062675A1

Abstract

The wireless communication method and the wireless communication equipment provided by the application can solve the problem of the side link SL communication terminal in the cell reselection process of the terminal under the system message on-demand (on-demand) mechanism. Provided is a wireless communication method including: in the case where the terminal resides in the first cell and the terminal does not acquire the side-uplink SL configuration information of the first cell, the terminal acquires the first SL resource according to the first SL configuration information. The first SL configuration information is current SL configuration information. Optionally, in the case that the terminal acquires the SL configuration information of the first cell, the terminal acquires the second SL resource according to the SL configuration information of the first cell.

Description

Wireless communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a wireless communication method and apparatus.

Background

In a communication system, such as a 5G system, an on-demand (on-demand) mechanism, such as a system message (system information, SI), is introduced in order to save air interface resources, i.e. the network device does not always broadcast all system messages, wherein part of the SI is not always broadcast, but only sent based on a request of a terminal. The SI may include a MIB, and/or at least one SIB, among others, as is well known to those skilled in the art. As defined by 3GPP, the SI includes a minimum SI (minimum SI) and other SIs (other SI), the network device will always broadcast the minimum SI, which is a system message block (system information block, SIB) strongly related to terminal access, camping, such as the minimum SI may include a master message block (Master Information Block, MIB) and/or SIB1, where the MIB includes a system frame number, and SIB1 includes information for evaluating whether the UE can access the cell; other SI, such as SIB3, SIB4, SIB5, etc., may be broadcast by the network device at all times, or may be sent based on a request from the terminal, depending on the implementation of the network device.

When the terminal in idle state or inactive state performs Side Link (SL) communication, and when the terminal needs to reselect a serving cell due to movement, under an on-demand mechanism, since a network device always broadcasts a part of SI (such as MIB and/or SIB 1), when the terminal needs to perform SL communication related SI (other SI) and the access network device needs to broadcast under the condition of terminal request, even if the terminal resides in a target cell, the target cell only transmits the SIB including the SL related SIB due to the need of the terminal to request to the target cell, so that the terminal cannot acquire SL communication resources in time, and the SL communication is interrupted.

Disclosure of Invention

The wireless communication method and the wireless communication equipment provided by the application can solve the problem of SL communication terminals in the cell reselection process of the terminals under an on-demand (on-demand) mechanism.

In a first aspect, a wireless communication method is provided, including: in the case where the terminal resides in the first cell and the terminal does not acquire the side-uplink SL configuration information of the first cell, the terminal acquires the first SL resource according to the first SL configuration information.

The source service cell of the terminal is a second cell, and the terminal mobile resides in the first cell. The first SL configuration information is current SL configuration information. Alternatively, when the second cell supports SL communication required for the terminal, the first SL configuration information is SL configuration information of the second cell. Or when the second cell does not support the SL communication required by the terminal, or before the terminal camps on the first cell, a suitable cell is not found to camp on, that is, when the source serving cell does not exist, the first SL configuration information is Pre-configured (Pre-configured) SL configuration information, where the Pre-configured SL configuration information may be dynamically Pre-configured by the core network device, or may be Pre-stored in the terminal or the terminal chip.

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

The first SL configuration information may be understood as 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 synchronization configuration information of the first cell.

In one embodiment, the method further comprises: and under the condition that the terminal acquires the SL configuration information of the first cell, the terminal acquires the second SL resource according to the SL configuration information of the first cell.

In one embodiment, the SL configuration information includes transmit resource pool configuration information, and/or receive resource pool configuration information, and/or abnormal resource pool configuration information. As is well known to those skilled in the art, a terminal may directly use an abnormal resource pool indicated by the abnormal resource pool configuration information without monitoring the abnormal resource pool configuration information. Other resource pool configuration information, such as sending resource pool configuration information or receiving resource pool configuration information, needs the terminal to monitor first and then acquire resources according to the monitoring result. The monitoring (sending) refers to monitoring the sending resource pool after the terminal acquires the SL sending resource pool indicated by the SL configuration information, for example, monitoring the signal strength on the resource, and determining whether the SL resource is available. When the terminal confirms that the SL resource is available, that is, when the sending result is that the monitored SL resource is available, the terminal can use the SL resource to perform SL data transmission, and no abnormal resource pool is used any more. The present application, for simplicity of description, has the obtained listening (sending) result that the resource to be listened to is considered available.

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, the terminal acquires the first SL resource after acquiring a serving result of the transmission resource pool of the second cell according to the SL configuration information of the second cell if the terminal resides in the first cell but does not acquire the SL configuration information of the first cell, and acquires the second SL resource after acquiring a serving result of the transmission resource pool of the first cell according to the transmission resource pool configuration information of the first cell if the terminal acquires the SL configuration information of the first cell.

In the case that 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 is in the first cell, but the SL configuration information of the first cell is not acquired, the terminal acquires the third SL resource according to the abnormal resource pool configuration information, and when the terminal acquires the SL configuration information of the first cell, the terminal acquires 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, and the terminal may acquire the fourth SL resource according to the abnormal resource pool configuration information after acquiring the SL configuration information of the first cell, until the terminal acquires the monitoring result of the transmission resource pool according to the transmission resource pool configuration information, and then acquires the second SL resource.

It can be seen that, in the case that the SL configuration information includes abnormal resource pool configuration information, the method described in the embodiment of the present application is also applicable, and even if the resource pool used for SL communication by the terminal is changed multiple times in the presence of the abnormal resource pool, the SL communication is still not interrupted.

It may be appreciated that, in the case where the SL configuration information includes the resource pool configuration information, the terminal may acquire the first SL resource according to the first resource pool configuration information (i.e., the first SL configuration information or the current SL configuration information) without acquiring the resource pool configuration information of the first cell (i.e., the SL configuration information of the first cell). In the case that the terminal acquires the resource pool configuration information of the first cell (SL configuration information of the first cell), the second SL resource may be acquired 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. Under the condition that the resource pool configuration information comprises sending or receiving the resource pool configuration information, the terminal can acquire the SL resource according to the resource pool configuration information only by acquiring the resource pool configuration information but also acquiring a monitoring result of a resource pool corresponding to the resource pool configuration information.

In one implementation, in the case where the SL configuration information includes synchronization source information as the access network device, the terminal may perform synchronization according to the target cell (first cell) in the case of camping on the target cell. Alternatively, the terminal may select whether to synchronize with the first cell or the second cell according to synchronization source information of a source serving cell (second cell) in a case where the terminal resides in the target cell and does not acquire synchronization source information of the target cell.

In one implementation, in the case where the SL configuration information includes synchronization source information being a GNSS, in the case where the terminal camps on the target cell and the DFN timing parameters of the target cell are not acquired, the synchronization may be performed with the GNSS according to the DFN timing parameters of the source serving cell (second cell). Under the condition that the terminal resides in the target cell and obtains the DFN time sequence parameter of the target cell, the terminal can realize synchronization with the GNSS according to the DFN time sequence parameter of the target cell (the first cell).

In one implementation, in the case where the SL configuration information includes SLRB configuration information, in the case where the terminal camps in the target cell and the SLRB configuration information of the target cell is not acquired, the first SLRB may be established according to the SLRB configuration information of the source serving cell (second cell). In the case that the terminal camps in the target cell and obtains the SLRB configuration information of the target cell, the terminal may establish a second SLRB according to the SLRB configuration information of the target cell (first cell) and delete the first SLRB established previously.

The above can show that the terminal resides in the first cell and can continue to use the first SL configuration information when the SL configuration information of the first cell (i.e., the target cell) is not acquired, so that the reliability of SL communication can be effectively ensured, and the problem that the SL communication is interrupted due to the fact that the required SL configuration information of the target cell cannot be acquired in time is effectively solved.

In a second aspect, a wireless communication method is provided, where a terminal resides in a second cell, and the method includes: the terminal receives at least one second side uplink SL configuration information from a second cell, wherein the second SL configuration information comprises adjacent cell identification information and SL configuration information corresponding to the adjacent cell identification information. Wherein the second SL configuration information comprises one or more of: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The descriptions related to the SL configuration information, the resource pool configuration information, the SLRB configuration information, and the synchronization configuration information are the same as those described in the first aspect and the embodiments thereof, and are not repeated herein.

The identification information of the neighboring cells may include a physical cell identification PCI, or other cell related identification information, such as a cell global identification 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, the third SL configuration information corresponding to the third neighboring cell PCI3 is SL configuration 3, and so on.

In one implementation, at least one second SL configuration information is sent by means of system broadcasting, and 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 be broadcast in different SIBs.

In one implementation, at least one second SL configuration information is sent to the terminal by means of RRC signaling, and the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information may be sent to the terminal in the same RRC signaling, or may be sent to the terminal in different RRC signaling.

In one implementation, the terminal obtains the first SL resource according to the first SL configuration information before the terminal camps on the first neighboring cell. In the case of SL communication required by the second cell to support the terminal, the first SL configuration information is SL configuration information of the second cell. Or in the case that the second cell does not support SL communication required by the terminal, or in the case that no suitable cell is found for camping before the terminal camps on the first neighboring cell, that is, in the case that there is no source serving cell, the first SL configuration information is Pre-configured (Pre-configured) SL configuration information, where the Pre-configured SL configuration information may be dynamically Pre-configured by the core network device, or may be Pre-stored in the terminal chip.

In one implementation, the terminal obtains the second SL resource according to the second SL configuration information in case the terminal camps on the first neighboring cell. It should be noted that, the specific time for the terminal to acquire the second SL resource according to the second SL configuration information may depend on the terminal implementation, for example, the terminal may acquire the second SL resource according to the second SL configuration information when camping on the first neighboring cell. For another example, the terminal may acquire the second SL resource according to the second SL configuration information when receiving the second SL configuration information. The application does not limit the specific time for acquiring the second SL resources according to the second SL configuration information.

In one implementation manner, the second SL configuration information includes abnormal resource pool configuration information, and before the terminal resides in the first neighboring cell and does not obtain a transmission resource pool monitoring result of the first neighboring cell, the terminal obtains the third SL resource according to the abnormal resource pool configuration information, where the transmission resource pool is a resource pool corresponding to the transmission 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 may obtain the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell. And further, after the configuration information of the sending resource pool of the first adjacent cell can be further obtained and the sending result of the sending resource pool is obtained, the second SL resource is obtained according to the configuration information of the sending resource pool of the first adjacent cell. For another example, the second configuration SL information includes abnormal resource pool configuration information of the first neighboring cell and transmission resource pool configuration information of the first neighboring cell, and the terminal may acquire the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell, and acquire the second SL resource according to the transmission resource pool configuration information of the first neighboring cell after acquiring the transmission resource pool configuration information of the first neighboring cell and acquiring a sending result of the transmission resource pool of the first neighboring cell.

In the above, when the terminal is in the second cell (source serving cell), the terminal can acquire the second SL configuration information of the neighboring cell from the second cell, and under the condition that the terminal reselects to the neighboring cell of the target (i.e., the target cell is the first neighboring cell), the terminal acquires the second SL resource based on the second SL configuration information of the target cell acquired by the terminal in the source serving cell, so that the second SL configuration information of the target cell can be acquired in time (or in advance) to acquire the second SL resource, and the SL communication can be continued, thereby also solving the problem of the interruption of the SL communication when the terminal reselects the cell.

In a third aspect, a wireless communication method is provided, the method comprising: the first access network equipment sends at least one piece of second side uplink SL configuration information, wherein the second SL configuration information comprises SL configuration information corresponding to adjacent cell identification information; the second SL configuration information is used for configuring a second SL resource for the terminal, and includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The SL configuration information, the resource pool configuration information, the SLRB configuration information, or the synchronization configuration information are the same as those described in the first aspect and the embodiments thereof, and are not described herein again.

The neighboring cell identifier, as in the second aspect and the embodiments thereof, is not described here again.

In one embodiment, the first access network device always broadcasts the second SL configuration information, so that the terminal can quickly acquire the SL configuration information of the target cell. The direct broadcast refers to continuous uninterrupted broadcast, or continuous broadcast. Alternatively, the first access network device broadcasts the second SL configuration information as needed, which may reduce air interface resources.

In one embodiment, the first access network device may also broadcast SL configuration information for 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 as needed, where the SL configuration information of the second cell and the second SL configuration information (corresponding to the neighboring cell) may be transmitted together, e.g. in the same SIB. Or the SL configuration information of the second cell may be transmitted separately from the second SL configuration information, for example, in a different SIB, which the present application is not limited to.

In one embodiment, the method further comprises: 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 neighboring cell.

In one embodiment, the method further comprises:

the first access network equipment sends SL configuration information of a second cell to the second access network equipment, wherein the second cell is the cell where the terminal currently resides.

Therefore, the service cell can broadcast the second SL configuration information of the neighboring cell to the terminal, and of course, can broadcast the SL configuration information of the cell to the terminal, so that the terminal can acquire the second SL configuration information of the reselected target cell before cell reselection, thereby ensuring the SL communication continuity of the terminal in the cell reselection process.

In a fourth aspect, there is provided a wireless communication apparatus or device 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 the above first aspect and implementation of the first aspect.

In a fifth aspect, there is provided a wireless communication apparatus or device 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 the above second aspect and embodiments of the second aspect.

In a sixth aspect, there is provided a wireless communication apparatus or device 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 the above third aspect and embodiments of the third aspect.

In a seventh aspect, there is provided 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 the above first aspect and the implementation of the first aspect.

In an eighth aspect, there is provided 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 the above second aspect and embodiments of the second aspect.

A ninth aspect provides a computer readable storage medium comprising computer readable instructions which, when read and executed by a communications device, cause the communications device to perform the method of any of the above third aspect and embodiments of the third aspect.

In a tenth aspect, there is provided a computer program product comprising computer readable instructions which, when read and executed by a communication device, cause the communication device to perform the method of any of the above first aspect and the implementation of the first aspect.

In an eleventh aspect, there is provided a computer program product comprising computer readable instructions which, when read and executed by a communication device, cause the communication device to perform the method of any of the above second aspect and embodiments of the second aspect.

In a twelfth aspect, there is provided a computer program product comprising computer readable instructions which, when read and executed by a communication device, cause the communication device to perform the method of any of the above third aspect and embodiments of the third aspect.

A thirteenth aspect provides a communication system comprising the apparatus of any of the above fourth and fourth aspects, and/or the apparatus of any of the fifth and fifth aspects, and/or the apparatus of any of the sixth and sixth aspects.

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

Advantageous effects of the fourth aspect, the seventh aspect, and any of the embodiments of the tenth aspect are the same as those of the first aspect, and are not described here again.

Advantageous effects of any of the embodiments of the fifth, eighth, and eleventh aspects are the same as those of the second aspect, and are not described here again.

Advantageous effects of any of the embodiments of the sixth, ninth, and twelfth aspects are the same as those of the second aspect, and are not repeated here.

Advantageous effects of any of the embodiments of the thirteenth and twelfth aspects are the same as any of the above aspects, and are not described here again.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

FIG. 2 is a partial schematic view of FIG. 1;

fig. 3 is a schematic diagram of a wireless communication method according to an embodiment of the present application;

fig. 4 is a flow chart of another wireless communication method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of the architecture of the method of FIG. 4;

fig. 6 is a flowchart of another wireless communication method according to an embodiment of the present application;

FIG. 7 is a schematic diagram of the architecture of the method of FIG. 6;

fig. 8 is a schematic structural diagram of a wireless communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a wireless communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of another wireless communication device according to an embodiment of the present application.

Detailed Description

In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. In addition, the embodiments of the present application use words such as "first," "second," etc. to distinguish between the same item or similar items that have substantially the same function and effect. For example, the first message and the second message are merely for distinguishing between different messages, and are not limited in their order of precedence. Those skilled in the art will appreciate that the words "first," "second," and the like do not limit the number and order of execution.

It should be noted that, in the present application, words such as "exemplary" or "such as" or "exemplary" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "such as" or the like should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The technical scheme of the application can be applied to various communication systems, such as: long term evolution (long time evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD) systems, universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication systems, public land mobile network (public land mobile network, PLMN) systems, 5G communication systems, future communication systems, and the like. The technical solution of the present application may include various application scenarios, such as internet of vehicles (vehicle to everything, V2X), vehicle-to-vehicle (vehicle to vehicle, V2V), vehicle-to-person (vehicle to pedestrian, V2P), vehicle-to-infrastructure (vehicle to infrastructure, V2I), machine-to-machine (machine to machine, M2M), device-to-machine (device to machine, D2M), device-to-device (D2D), macro-micro communication, enhanced mobile internet (enhance mobile broadband, eMBB), ultra-high reliability and ultra-low latency communication (ultra-latency & low latency communication, uilc), and mass internet of things communication (massive machine type communication, mctc).

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems. The embodiment of the application is exemplified by the application of the method provided in a New Radio (NR) system or a 5G network.

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. Referring to fig. 1, the communication system includes: an access network device 10, and at least two terminals, two terminals being illustrated in fig. 1 as terminal 20 and terminal 30, respectively, terminal 20 and terminal 30 being capable of communicating with access network 10, fig. 1 only showing terminal 20 in communication with access network 10, terminal 20 also being capable of communicating with terminal 30. Alternatively, the access network device 10 may also communicate directly with the terminal 30, which is only an example and is not limiting in this specification.

It should be noted that the communication system shown in fig. 1 may further include: a core network device 40. The access network device 10 may be connected to a core network device. The core network device 40 may be a 4G core network (e.g., core packet network evolution (Evolved Packet Core, EPC)) device or a 5G core network (5G core,5 gc) device, or a core network device in various future communication systems.

Taking the core network device 40 as an example of a 5G core network device, the access network device 10 may be a next generation node B (The Next Generation Node B, gNB) in the NR system, and the terminal 20 may be a terminal for information transmission with the gNB. The gNB accesses the 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-3 GPP 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).

Terminals 20 and 30 may be a device with wireless communication capabilities that may be deployed on land, including indoors or outdoors, hand held or vehicle mounted. Can also be deployed on the water surface (such as a ship, etc.). But may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). Terminals, also called User Equipment (UE), mobile Stations (MSs), mobile Terminals (MT), and terminal equipment, etc., are devices that provide voice and/or data connectivity to a user. For example, the terminal includes a handheld device, an in-vehicle device, and the like having a wireless connection function. Currently, the terminal may be: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device (e.g., a smartwatch, a smartband, a pedometer, etc.), a vehicle-mounted device (e.g., an automobile, a bicycle, an electric car, an airplane, a ship, a train, a high-speed rail, etc.), a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a smart home device (e.g., a refrigerator, a television, an air conditioner, an ammeter, etc.), a smart robot, a workshop device, a wireless terminal in a self-drive (self-drive), a wireless terminal in a teleoperation (remote medical surgery), a wireless terminal in a smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in a smart city (smart city), or a wireless terminal in a smart home (smart home), a wireless terminal in a smart home (e.g., a smart flying robot, a hot man, an airplane, etc. In one possible application scenario of the present application, the terminal is a terminal device that is often operated on the ground, such as a vehicle-mounted device. In the present application, for convenience of description, a Chip disposed in the above-described device, such as a System-On-a-Chip (SOC), a baseband Chip, etc., or other chips having a communication function may also be referred to as a terminal.

The terminal 20 or the terminal 30 may be a vehicle with a corresponding communication function, or an on-board communication device, or other embedded communication devices, or may be a user handheld communication device, including a mobile phone, a tablet computer, etc.

As an example, terminals 20 and 30 may also include wearable devices. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The access network device 10 is an entity that can be used to transmit or receive signals for use with either the terminal 20 or the terminal 30. For example, the Access Point (AP) in the WLAN may be an evolved Node B (eNB or eNodeB) in the LTE, or a relay station or an Access Point, or a vehicle device, a wearable device, a network device in a future 5G network, or an Access network device in a future evolved PLMN network, etc.

In addition, in the embodiment of the present application, the access network device provides services for the cell, and the terminal communicates with the access network device through transmission resources (for example, time domain resources, or frequency domain resources, or time-frequency resources) used by the cell. As is well known to those skilled in the art, different cells may belong to the same access network device, i.e. one access network device may serve a plurality of different cells, or different cells may belong to different access network devices, i.e. different access network devices serve different cells.

With continued reference to fig. 1 in conjunction with fig. 2, the terminal 20 in an idle state or in an inactive state has ongoing SL communication with the terminal 30, and when the terminal 20 needs to perform cell reselection due to mobility, the terminal receives the neighboring cell broadcast SI (including SIB 1), selects a suitable target cell for camping according to the service quality of the neighboring cell, for example, the terminal selects the neighboring cell with the strongest SI as the target cell, as shown in fig. 1, and the first cell is the target cell of the terminal 20. The cell currently served by the terminal 20 is a second cell, or the source serving cell of the terminal 20 is a 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 fig. 1, or may belong to different access network devices, which is not limited by the present application.

In a communication system under an on-demand mechanism, since an access network device only always broadcasts SI (e.g., SIB 1) necessary for a terminal to access, when the terminal finds that an SI (SL-related SIB, which may be one or more SIBs) related to SL communication required by the terminal is not broadcast by a target cell, the terminal knows that the target cell supports SL communication according to the SI (e.g., SIB 1) broadcast by the target cell, for example, an indication that the SL-related SIB is included in SIB 1. The terminal can also know the random access resources corresponding to the SL related SIB (other SIBs, such as other SIBs except SIB 1), further trigger random access (for example, send a preamble to the first cell), instruct the first cell to send the needed SL related SIB, and after receiving the SL related SI (SIB), the terminal can acquire the needed SL resource configuration, and further can continue SL communication.

Referring to fig. 2, when the terminal 20 reselects to the first cell at time T1, or otherwise camps on the first cell at time T1, in the communication system under the on-demand mechanism, the terminal needs to obtain random access resource information corresponding to the SIB related to SL communication, for example, SIB3 information, according to the SI broadcast by the first cell, for example, SIB1, and further triggers the random access resource corresponding to the random access resource information of the random access request, for example, SIB3, at time T2, so that the terminal 20 obtains the SL resource configuration information of the first cell at time T3 later, that is, obtains the required SL resource configuration information. As can be seen from the above, in the period from T1 to T3, even though the terminal 20 is already camping on the first cell, the SL communication is interrupted because the terminal 20 cannot acquire the SL configuration information of the first cell in time.

The wireless communication method and the wireless communication device can solve the problem that the SL communication is interrupted because the terminal resides in the target cell but can not acquire the SL configuration information of the target cell in time.

Referring to fig. 3, the source serving cell of the terminal is a second cell, and since the terminal mobile camps to the first cell, it is a schematic diagram of a wireless communication method provided in the embodiment of the present application,

in the case where the terminal resides in the first cell and the terminal does not acquire the side-uplink SL configuration information of the first cell, the terminal acquires the first SL resource according to the first SL configuration information.

The first SL configuration information is current SL configuration information. Alternatively, when the second cell supports SL communication required for the terminal, the first SL configuration information is SL configuration information of the second cell. Or when the second cell does not support the SL communication required by the terminal, or before the terminal camps on the first cell, a suitable cell is not found to camp on, that is, when the source serving cell does not exist, the first SL configuration information is Pre-configured (Pre-configured) SL configuration information, where the Pre-configured SL configuration information may be dynamically Pre-configured by the core network device, or may be Pre-stored in the terminal chip.

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

For example, the first SL configuration information includes transmission resource pool configuration information, which indicates that the current configuration information includes transmission source serving cell or preconfigured resource pool configuration information. The SL configuration information of the first cell includes abnormal resource pool configuration information indicating abnormal resource pool configuration information of the first cell, and the SL configuration information of the first cell refers to SL configuration information related to the first cell. For example, the resource pool configuration information includes transmit resource pool configuration information, and/or receive resource pool configuration information, and/or abnormal resource pool configuration information. The SLRB configuration information includes configuration information of a service data adaptation protocol (service data adaptation protocol, SDAP) and/or configuration information of a packet data convergence layer protocol (packet data convergence protocol, PDCP) and/or configuration information of a radio link control (radio link control, RLC) and/or configuration information of a medium access control (media access control, MAC) corresponding to the SLRB. The synchronization configuration information includes synchronization source information, and/or other synchronization information, such as a Cyclic Prefix (CP) length.

The terminal not acquiring the side uplink SL configuration information of the first cell means that: under the on-demand mechanism, even though the terminal is already camping in the first cell, the terminal is required to request the needed SL resources before further acquiring the configuration information of the first cell SL, for example, between time T1 and time T3 shown in fig. 3, and the terminal does not acquire the SL configuration information of the first cell.

Optionally, in the case that the terminal acquires the SL configuration information of the first cell, for example, after the time T3 and the time T3 shown in fig. 3, the terminal acquires the second SL resource according to the SL configuration information of the first cell.

The SL configuration information includes transmission resource pool configuration information and/or reception resource pool configuration information and/or abnormal resource pool configuration information, for example.

As is well known to those skilled in the art, the terminal may directly use the abnormal resource pool indicated by the abnormal resource pool configuration information without listening (sending) to the abnormal resource pool configuration information. Other resource pool configuration information, such as sending resource pool configuration information or receiving resource pool configuration information, needs the terminal to monitor first and then acquire resources according to the monitoring result.

The monitoring (sending) in the present application refers to monitoring a sending resource pool after a terminal acquires the sending resource pool indicated by SL configuration information, for example, monitoring signal strength on the resource, and determining whether the SL resource is available. When the terminal confirms that the SL resource is available, that is, when the sending result is that the monitored SL resource is available, the terminal can use the SL resource to perform SL data transmission, and no abnormal resource pool is used any more. For simplicity of description, the obtained monitoring result considers the monitored resource to be available.

In an example, in a possible implementation manner, the SL configuration information of the first cell includes transmission resource pool configuration information of the first cell, the SL configuration information of the second cell includes transmission resource pool configuration information of the second cell, before a time T3, after the terminal obtains a sending result of the transmission resource pool of the second cell according to the transmission resource pool configuration information of the second cell, so as to obtain the first SL resource, after a time T3 (may include a time T3), the terminal obtains a sending result of the transmission resource pool of the first cell according to the transmission resource pool configuration information of the first cell, so as to obtain the second SL resource.

In another possible implementation manner, the SL configuration information of the second cell further includes abnormal resource pool configuration information of the second cell, after the time T1 (may include the time T1), the terminal obtains the third SL resource according to the abnormal resource pool configuration information of the second cell, obtains the sending resource pool configuration information of the first cell, and obtains the sending result of the sending resource pool of the first cell, and then obtains the second SL resource according to the sending resource pool information of the first cell. Of course, the transmission resource pool configuration information of the second cell may also be used to obtain the fourth SL resource at the time T1, and the present application does not strictly limit the SL configuration information used at the time T1. The first SL resource, the second SL resource, the third SL resource, the fourth SL resource, and the like according to the present application may be the same or different, and the present application is not limited thereto.

In another possible implementation manner, the SL configuration information of the first cell and the SL configuration information of the second cell include the transmission resource pool configuration information and the abnormal resource pool configuration information, respectively, before the time T1, the terminal obtains the first SL resource according to the transmission resource pool configuration information of the second cell, after the time 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 a monitoring result of the transmission resource pool of the first cell, and the terminal obtains the second SL resource according to the transmission resource pool information of the first cell. Or after the time T3 (may include the time T3), the terminal obtains the fourth SL resource according to the abnormal resource pool indicated by the abnormal resource pool configuration information of the first cell, and obtains the second SL resource according to the transmission resource pool configuration information of the first cell after obtaining the transmission resource pool information of the first cell and obtaining the sending result of the transmission resource pool of the first cell. The SL configuration information used at the time T1, the time T2, and the time T3 is not strictly limited, and the description of the time T1 is omitted here.

It can be seen that, in the case that the SL configuration information includes abnormal resource pool configuration information, the method described in the embodiment of the present application is also applicable, and even if the resource pool used for SL communication by the terminal is changed multiple times in the presence of the abnormal resource pool, the SL communication is still not interrupted. The above can show that the terminal resides in the first cell and can continue to use the first SL configuration information when the SL configuration information of the first cell (i.e., the target cell) is not acquired, so that the reliability of SL communication can be effectively ensured, and the problem that the SL communication is interrupted due to the fact that the required SL configuration information of the target cell cannot be acquired in time is effectively solved.

Taking the SL configuration information including the synchronization source information as an example, please continue to combine the communication method shown in fig. 3, in one possible implementation manner, the synchronization source indicated by the synchronization source information is an access network device, and between the time points T1 to T3, the terminal may synchronize with the second cell or synchronize with the first cell. In the case that the first access network device provides a service for the first cell and the second access network device provides a service for the second cell, it may be understood that the terminal may be synchronized with the first access network device or the second access network device. The first access network device and the second access network device may be the same access network device or different access network devices.

It can be appreciated that in the case where the SL configuration information includes synchronization source information as the access network device, the terminal may perform synchronization according to the target cell in the case of camping on the target cell (first cell). Alternatively, the terminal may select whether to synchronize with the first cell or the second cell according to synchronization source information of a source serving cell (second cell) in a case where the terminal resides in the target cell and does not acquire synchronization source information of the target cell. In another possible implementation, when the synchronization source indicated by the synchronization source information is a global navigation satellite system (global navigation satellite system, GNSS), the synchronization configuration information further includes a direct frame number (direct frame number, DFN) timing parameter, such as a time DFN offset (DFN offset), for the terminal to determine the parameters of the DFN timing based on the GNSS. For example, as shown in fig. 3, between time T1 and time T3, the terminal uses the DFN timing parameters of the second cell to achieve synchronization with the GNSS. After time T3 (which may include time T3), the terminal uses the DFN timing parameters of the first cell to achieve synchronization with the GNSS.

It can be appreciated that in the case where the SL configuration information includes synchronization source information being a GNSS, in the case where the terminal camps on the target cell and the DFN timing parameters of the target cell are not acquired, the synchronization with the GNSS can be performed according to the DFN timing parameters of the source serving cell (second cell). Under the condition that the terminal resides in the target cell and obtains the DFN time sequence parameter of the target cell, the terminal can realize synchronization with the GNSS according to the DFN time sequence parameter of the target cell (the first cell).

Taking the example that the SL configuration information includes the SLRB configuration information, before the time T3, the terminal establishes a first SLRB according to the current SLRB configuration information; after time T3 (may include time T3), the terminal establishes a second SLRB according to the SLRB configuration information of the first cell, and deletes the previously established first SLRB.

It can be appreciated that in the case where the SL configuration information includes the SLRB configuration information, in the case where the terminal camps in the target cell and the SLRB configuration information of the target cell is not acquired, the first SLRB may be established according to the SLRB configuration information of the source serving cell (second cell). In the case that the terminal camps in the target cell and obtains the SLRB configuration information of the target cell, the terminal may establish a second SLRB according to the SLRB configuration information of the target cell (first cell) and delete the first SLRB established previously.

In the application, the SL configuration information of the adjacent cell can be broadcasted by the current service cell before the cell reselection by the terminal, so that the SL configuration information of the target cell can be obtained before the terminal resides in the target cell, and the problem of SL communication interruption of the terminal under the condition of cell reselection can be solved.

Referring to fig. 4 and fig. 5, which are schematic diagrams of another wireless communication method provided in the embodiment of the present application, a current serving cell (source serving cell) of a terminal is a second cell, or the terminal currently resides in the second cell, where the second cell is served by a first access network device, and the neighboring cells are neighboring cells of the second cell, where the neighboring cells include a first neighboring cell, and the first neighboring cell may be any neighboring cell of the second cell, and the first neighboring cell is served by the second access network device:

s410: the first access network device transmits at least one second side uplink SL configuration information.

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

The description of the resource pool configuration information, the SLRB configuration information, and the synchronization configuration information is the same as that of the embodiment shown in fig. 3, and is not repeated here.

The identification information of the neighboring cells may include a physical cell identity (physical cell identifier, PCI), or other cell-related identification information, such as a cell global identity (cell global identifier, CGI) or a cell index, among others. 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, the third SL configuration information corresponding to the third neighboring cell PCI3 is SL configuration 3, and so on, and at this time, specific forms of the neighboring cell identification information and the SL configuration information corresponding to the neighboring cell identification information may be shown in the following table:

if at least one second SL configuration information is sent by means of system broadcasting, 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 be broadcast in different SIBs, which is not limited in the present application. It is understood that the first access device broadcasts at least one second SL configuration information via one or more SIBs of the second cell. For example, the first access device broadcasts a second SL configuration information via a SIB of the second cell; for another example, the first access device broadcasts a plurality of second SL configuration information via one SIB of the second cell; for another example, the first access device broadcasts a second SL configuration information through a plurality of SIBs of the second cell, etc., which the present application is not limited to. Or alternatively, the process may be performed,

If at least one second SL configuration information is sent to the terminal by means of RRC signaling, the identification information of different neighboring cells and the second SL configuration information corresponding to the neighboring cell identification information may be sent to the terminal in the same RRC signaling, or may be sent to the terminal in different RRC signaling, which is not limited in the present application. Optionally, the first access network device instructs the terminal device to enter an idle state or an inactive state through RRC signaling, and sends the at least one second SL configuration information to the terminal.

Optionally, the wireless communication method provided by the embodiment of the present application further includes:

s410': the terminal receives the second SL configuration information.

s420: and the terminal acquires the second SL resource according to the second SL configuration information.

Alternatively, the terminal may use the second SL resource for SL communication when camping on the first neighboring cell.

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

Optionally, the first access network device always broadcasts the second SL configuration information, so that the terminal can quickly acquire the SL configuration information of the target cell. The direct broadcast refers to continuous uninterrupted broadcast, or continuous broadcast. Alternatively, the first access network device broadcasts the second SL configuration information as needed, which may reduce air interface resources.

Optionally, the first access network device may also broadcast 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 as needed, where the SL configuration information of the second cell and the second SL configuration information (corresponding to the neighboring cell) may be transmitted together, e.g. in the same SIB. Or the SL configuration information of the second cell may be transmitted separately from the second SL configuration information, for example, in a different SIB, which the present application is not limited to.

If the delay requirement of the SL communication of the terminal is higher, the first access network equipment can be used for broadcasting the second SL configuration information all the time, and if the air interface resources are tense, the first access network equipment can be used for broadcasting the second SL configuration information according to the requirement. Thus, SL resource allocation required by the terminal can be flexibly realized.

Optionally, before the terminal camps on the first neighboring cell, the terminal acquires the first SL resource according to the first SL configuration information. In the case of SL communication required by the second cell to support the terminal, the first SL configuration information is SL configuration information of the second cell. Or in the case that the second cell does not support SL communication required by the terminal, or in the case that no suitable cell is found for camping before the terminal camps on the first neighboring cell, that is, in the case that there is no source serving cell, the first SL configuration information is Pre-configured (Pre-configured) SL configuration information, where the Pre-configured SL configuration information may be dynamically Pre-configured by the core network device, or may be Pre-stored in the terminal chip.

And under the condition that the terminal needs to reselect to the first adjacent cell, the terminal acquires the second SL resource according to the second SL configuration information. It may be understood that when the terminal resides 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 may obtain the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell. And further, after the configuration information of the sending resource pool of the first adjacent cell can be further obtained and the sending result of the sending resource pool is obtained, the second SL resource is obtained according to the configuration information of the sending resource pool of the first adjacent cell. For another example, the second SL configuration information includes transmission resource pool configuration information of the first neighboring cell, and before the terminal camps on the first neighboring cell, a sending result of the transmission resource pool is obtained in advance, and after the terminal camps on 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 abnormal resource pool configuration information of the first neighboring cell and transmission resource pool configuration information of the first neighboring cell, and the terminal may acquire the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell, and acquire the second SL resource according to the transmission resource pool configuration information of the first neighboring cell after acquiring the transmission resource pool configuration information of the first neighboring cell and acquiring a sending result of the transmission resource pool of the first neighboring cell.

Optionally, the wireless communication method provided in fig. 4 further includes:

s430: the second access network device sends the second side uplink SL configuration information to the first access network device before the terminal receives the second SL configuration information from 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 the SL configuration information of the first neighboring cell can be sent to the terminal in the second cell.

s440: the first access network device sends SL configuration information of the second cell to the second access network device. The transmission time of step S440 is not limited in the embodiment of the present application, and for example, step S440 may be before or after any of steps S410 to S430. So that a first neighboring cell can send SL configuration information for the second cell to terminals residing in the first neighboring cell. Optionally, the first access network device may also send SL configuration information of the second cell to other access network devices, for example, the third access network device, and even if the third access network device does not send SL configuration information of the cell corresponding to the third access network device to the first access network device, the first access network device may send SL configuration information of the second cell to the third access network device.

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

It should be noted that, the first access network device to which the second cell shown in fig. 5 belongs, and the second access network device to which the first neighboring cell belongs may be different access network devices or the same access network device, which is not limited in this embodiment of the present application.

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

s610: the second access network device broadcasts a first system message SI. The first SI includes first request configuration information, where the first request configuration information corresponds to a second SI (for example, SIB 3), and the second SI includes SL configuration information of a first neighboring cell.

Wherein the SL configuration information for the first neighboring cell includes one or more of: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

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

S620: and the terminal receives the first SI and determines first request configuration information corresponding to the second SI according to the first SI. The first request configuration information is used for indicating first information for requesting the second SI to use and first time-frequency resources for sending the first information.

S630: the terminal sends 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 according to the first information and the first time-frequency resource corresponding to the second SI in the first SI, namely, the terminal sends the first information to the second access network equipment on the first time-frequency resource, and the second access network equipment can be instructed to broadcast the second SI through the first adjacent cell.

Optionally, in the case that the target cell after the terminal cell reselection is the first neighboring cell, before determining that the first neighboring cell is the target cell, the terminal sends first information to the first neighboring cell according to the first SI; or after determining that the first neighboring cell is the target cell, and before the terminal resides in the first neighboring cell (target cell), the terminal sends first information to the first neighboring cell according to the first SI. It should be noted that, the time for the terminal to send the first message to the first neighboring cell may be determined by the terminal itself, but in order to achieve the purpose of reducing the interruption delay, it is necessary to send the first message before camping on the target cell.

s640: and the second access network equipment sends SL configuration information of the first adjacent 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 may be understood as the second access network device broadcasting the second SI through the first neighboring cell, where the second SI includes the SL configuration information of the first neighboring cell. Alternatively, the second SI may be other SIBs than SIB1, example SIB3.

s640': the terminal receives SL configuration information of the first neighboring cell.

s650: and the terminal acquires SL resources of the first adjacent cell according to the SL configuration information of the first adjacent cell.

It should be noted that, the specific time for the terminal to acquire the SL resource of the first neighboring cell according to the SL configuration information of the first neighboring cell may depend on the network implementation, for example, the terminal may acquire the SL resource of the first neighboring cell according to the SL configuration information of the first neighboring cell when the terminal resides in the first neighboring cell. For another example, the terminal may acquire the SL resource of the first neighboring cell according to the SL configuration information of the first neighboring cell when receiving the second SL configuration information. In the case that the terminal needs to reselect to the first neighboring cell, the terminal may acquire the second SL resource according to the SL configuration information of the first neighboring cell. It can be understood that when the terminal resides in the second cell, the SL configuration information of the first neighboring cell corresponding to the first neighboring cell can be obtained.

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 may acquire the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell. And further, after the configuration information of the sending resource pool of the first adjacent cell can be further obtained and the sending result of the sending resource pool is obtained, the third SL resource is obtained according to the configuration information of the sending resource pool of the first adjacent cell. For another example, the SL configuration information of the first neighboring cell includes transmission resource pool configuration information of the first neighboring cell, before the terminal camps on the first neighboring cell, a sending result of the transmission resource pool is obtained in advance, and after the terminal camps on the first neighboring cell, a 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 abnormal resource pool configuration information of the first neighboring cell and transmission resource pool configuration information of the first neighboring cell, and the terminal may acquire the third SL resource according to the abnormal resource pool configuration information of the first neighboring cell, and acquire the second SL resource according to the transmission resource pool configuration information of the first neighboring cell after acquiring the transmission resource pool configuration information of the first neighboring cell and acquiring a sending result of the transmission resource pool of the first neighboring cell.

Therefore, before the cell reselection, the terminal can send a required SL communication request (preamble) to the first neighboring cell, so that the SL configuration information of the first neighboring cell can be obtained in advance, and the first neighboring cell can be a target cell of the terminal, so that when the terminal reselects to the first neighboring cell, the SL configuration information of the first neighboring cell can be used to obtain the SL resource of the first neighboring cell, thereby effectively solving the problem of SL communication interruption of the terminal in the cell process.

It should be noted that, the second cell shown in fig. 7 belongs to the first access network device, and the first neighboring cell belongs to the second access network device, that is, belongs to different access network devices, and optionally, the second cell and the first neighboring cell may also belong to the same access network device, such as the first access network device shown in fig. 7, which is not limited in this embodiment of the present application.

The wireless communication method, device or equipment provided by the application is suitable for: the source serving cell (second cell shown in fig. 3) and the target cell (first cell shown in fig. 3) do not belong to the same active area (validity area). The definition of the effective area is defined by related standards, and will not be described in detail herein. For example, if the system information area identifier (systeminformarnareaid) of the SI corresponding to the SL in the source serving cell is different from the system information area identifier of the SI corresponding to the SL in the target cell, that is, the SI corresponding to the SL in the source cell and the SI corresponding to the SL in the target cell are considered to belong to different valid areas. Or if the value tag (value tag) of the SI corresponding to the SL in the source serving cell is different from the value tag of the SI corresponding to the SL in the target cell, that is, the SI corresponding to the SL in the source cell and the SI corresponding to the SL in the target cell are considered to belong to different effective areas.

The above can be seen that the problem of SL communication interruption of the terminal in the case of cell reselection under the on-demand mechanism can be solved by adopting the wireless communication method provided by any embodiment of the present application.

The foregoing details of the method according to the embodiment of the present application, and the following provides a communication device and related equipment according to the embodiment of the present application.

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

the processing unit 820 is configured to acquire the first SL resource according to the first SL configuration information when the acquiring unit 810 does not acquire the side uplink SL configuration information of the first cell. The first SL configuration information is current SL configuration information.

Wherein the first SL configuration information comprises one or more of: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

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

In one implementation, the synchronization configuration information includes synchronization source information, and when the synchronization source indicated by the synchronization source information is an access network device, the apparatus synchronizes with the second cell, or the apparatus synchronizes with the first cell. It will be appreciated that in the event that the apparatus is camping on a first cell and the SL configuration parameters of the first cell are not acquired, it may be synchronized with either the first cell or the second cell.

In another implementation, the synchronization configuration information includes synchronization source information, and when the synchronization source indicated by the synchronization source information is a GNSS, the apparatus synchronizes with the GNSS. Further, the synchronization configuration information further includes a DFN timing parameter, where the DFN timing parameter is used to determine a synchronization timing of the device with the 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. It can be appreciated that in case the device is camping on a first cell, and the SL configuration parameters of the first cell are not acquired, the DFN timing parameters of a second cell are used to synchronize with the GNSS; alternatively, if the apparatus acquires the SL configuration parameter of the first cell, the DFN timing parameter of the first cell is used to synchronize with the GNSS.

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

It can be seen that when the apparatus does not acquire the SL configuration information of the target cell (the first cell), the first SL resource may be acquired according to the first SL configuration information, so that communication continuity of the SL is ensured.

Alternatively, the device shown in fig. 8 may be a terminal, or may be a chip device in the terminal.

It should be noted that, in the embodiment corresponding to fig. 8, details of implementation and beneficial effects of the steps performed by each unit may be referred to the embodiment shown in fig. 3 and the foregoing, and will not be described herein again.

In one implementation, the relevant functions implemented by the various elements of FIG. 8 may be implemented in conjunction with a processor and transceiver. Fig. 9 is a schematic structural diagram of a wireless communication device according to an embodiment of the present invention, where the device includes a transceiver 910, a processor 920, and optionally further includes a memory 930, where the processor 920 and the transceiver 910, and the memory 930 are connected by one or more communication buses.

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

The memory 930 is used for storing program codes and the like. Memory 930 may include volatile memory (RAM), such as random access memory (random access memory); the memory 930 may also include a nonvolatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD) or a Solid State Drive (SSD); memory 930 may also include combinations of the above types of memory.

In transceiver 910, processor 920 may invoke program code stored in memory 930 to perform the following operations:

and when the transceiver 910 does not acquire the side uplink SL configuration information of the first cell, acquiring a first SL resource according to first SL configuration information, where the first SL configuration information is current SL configuration information.

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

In one implementation, the synchronization configuration information includes synchronization source information, and 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. It will be appreciated that in the event that the device is camping on a first cell and the SL configuration parameters of the first cell are not acquired, it may be synchronized with either the first cell or the second cell.

In another implementation, the synchronization configuration information includes synchronization source information, and the device is synchronized with the GNSS when the synchronization source indicated by the synchronization source information is the GNSS. Further, the synchronization configuration information further includes a DFN timing parameter, where the DFN timing parameter is used to determine a synchronization timing of the device with the 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. It can be appreciated that in case the device is camping on a first cell, and the SL configuration parameters of the first cell are not acquired, the DFN timing parameters of a second cell are used to synchronize with the GNSS; alternatively, if the apparatus acquires the SL configuration parameter of the first cell, the DFN timing parameter of the first cell is used to synchronize with the GNSS.

It can be seen that when the apparatus does not acquire the SL configuration information of the target cell (the first cell), the first SL resource may be acquired according to the first SL configuration information, so that the communication continuity of the SL is ensured.

Alternatively, the device shown in fig. 9 may be a terminal, or may be a chip in the terminal.

It should be noted that, in the embodiment corresponding to fig. 9, details of implementation and beneficial effects of the steps performed by each unit may be referred to the embodiment shown in fig. 3 and the foregoing, and will not be described herein again.

Fig. 10 is a schematic structural diagram of a wireless communication apparatus according to an embodiment of the present application, where the communication apparatus is configured to perform steps performed by a terminal according to an embodiment of a method corresponding to fig. 4 and fig. 5, and a current serving cell (a source serving cell) of the apparatus is a second cell, or the apparatus currently resides in the second cell, and the second cell is served by a first access network device, and the neighboring cells are neighboring cells of the second cell, where the neighboring cells include a first neighboring cell, and the first neighboring cell may be any neighboring cell of the second cell, and the first neighboring cell is served by the second access network device. The apparatus may include: the receiving unit 1010 has a function of,

The receiving unit 1010 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.

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

The apparatus optionally further comprises a processing unit 1020 configured to obtain a second SL resource according to the second SL configuration information.

In one embodiment, the neighboring cells include a first neighboring cell, and the processing unit 1020 is further configured to, in a case where the apparatus needs to camp on the first neighboring cell for cell reselection: before the device resides in the first adjacent cell, first SL resources are acquired according to first SL configuration information, wherein the first SL configuration information is current SL configuration information. Or the processing unit 1020 is configured to obtain a second SL resource according to the second SL configuration information if the apparatus resides in the first neighboring cell.

In one embodiment, the first SL configuration information includes: when the second cell supports SL communication required by the device, the first SL configuration information is the SL configuration information of the second cell; alternatively, the first SL configuration information is preconfigured SL configuration information when the second cell does not support SL communication required by the apparatus.

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

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

It can be seen that, by adopting the wireless communication apparatus according to the embodiment of the present application, when the apparatus receives the SL configuration information (i.e. the second SL configuration information) of the neighboring cell from the current serving cell, and when the apparatus resides in the neighboring cell in the case that the apparatus needs to perform cell reselection, the SL resource of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Alternatively, the device shown in fig. 10 may be a terminal, or may be a chip in the terminal.

It should be noted that, details of implementation and beneficial effects of the steps performed by each unit and not mentioned in the embodiment corresponding to fig. 10 can be referred to the embodiments shown in fig. 4 and fig. 5 and the foregoing details, and are not repeated here.

In one implementation, the relevant functions implemented by the various elements of FIG. 10 may be implemented in conjunction with a processor and transceiver. Fig. 11 is a schematic structural diagram of a wireless communication device according to an embodiment of the present invention, where the device includes a transceiver 1110, a processor 1120, and optionally, a memory 1130, where the processor 1120, the transceiver 1110, and the memory 1130 are connected by one or more communication buses.

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

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

Transceiver 1110 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.

Transceiver 1110, processor 1120 may invoke program code stored in memory 1130 to perform: and acquiring a second SL resource according to the second SL configuration information.

In one embodiment, the neighboring cells include a first neighboring cell, and the processor 1120 is further configured to, in the event that the device needs to camp on the first neighboring cell for cell reselection: before the equipment resides in the first adjacent cell, acquiring first SL resources according to first SL configuration information, wherein the first SL configuration information is current SL configuration information; or the processor 1120 is configured to obtain the second SL resource according to the second SL configuration information when the device resides in the first neighboring cell.

In one embodiment, the first SL configuration information includes: when the second cell supports SL communication required by the equipment, the first SL configuration information is the SL configuration information of the second cell; alternatively, the first SL configuration information is preconfigured SL configuration information when the second cell does not support SL communication required by the device.

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

and before the equipment resides in the first adjacent cell and the monitoring result of the sending resource pool of the first adjacent cell is not obtained, the third SL resource is obtained according to the abnormal resource pool configuration information. The sending resource pool is a resource pool corresponding to the sending resource pool configuration information.

It can be seen that, by adopting the wireless communication device according to the embodiment of the present application, when the device receives the SL configuration information (i.e. the second SL configuration information) of the neighboring cell from the current serving cell, and when the device resides in the neighboring cell under the condition that the device needs to perform cell reselection, the SL resource of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Alternatively, the device shown in fig. 11 may be a terminal, or may be a chip in the terminal.

It should be noted that, in the embodiment corresponding to fig. 11, details of implementation and beneficial effects of the steps performed by each unit may be referred to the embodiments shown in fig. 4 and fig. 5 and the foregoing details, and are not repeated here.

Fig. 12 is a schematic structural diagram of a wireless communication apparatus according to an embodiment of the present application, where the communication apparatus is configured to perform steps performed by a first access network device in the embodiment of the method corresponding to fig. 4 and fig. 5, and a current serving cell (source serving cell) of a terminal is a second cell, or the terminal currently resides in the second cell, and the second cell is served by the apparatus, where the neighboring cell is a neighboring cell of the second cell, and the neighboring cell includes a first neighboring cell, and the first neighboring cell may be any neighboring cell of the second cell, and the first neighboring cell is served by the second access network device. The apparatus may include: the transmitting unit 1210 may transmit a message to the host,

the transmitting unit 1210 is configured to transmit at least one second side uplink SL configuration information. The second SL configuration information includes neighboring cell identification information and SL configuration information corresponding to the neighboring cell identification information. The second SL configuration information is configured to configure a second SL resource for the terminal, and includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

In one implementation, the apparatus 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 SL configuration information of the second cell to the second access network device. The second cell is the cell where the terminal currently resides.

Therefore, the device can send the second SL configuration information (the configuration information of the adjacent cells) to the terminal in the current service cell of the terminal, so that the terminal can acquire the SL configuration information of the adjacent cells in time (or in advance), and the problem of interruption of SL communication is effectively solved.

Alternatively, the apparatus shown in fig. 12 may be an access network device, or may be a chip in the access network device.

It should be noted that, details of implementation and advantages of the steps performed by each unit and not mentioned in the embodiment corresponding to fig. 12 may be referred to the embodiments shown in fig. 4 and fig. 5 and the foregoing descriptions, and are not repeated here.

In one implementation, the relevant functions implemented by the various elements of FIG. 12 may be implemented in conjunction with a processor and transceiver. Fig. 13 is a schematic structural diagram of a wireless communication device according to an embodiment of the present application, where the device includes a transceiver 1310, a processor 1320, and optionally, a memory 1330, where the processor 1320 and the memory 1330 of the transceiver 310 are connected through one or more communication buses.

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

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

Transceiver 1310 transmits at least one second side uplink SL configuration information. The second SL configuration information includes neighboring cell identification information and SL configuration information corresponding to the neighboring cell identification information. The second SL configuration information is configured to configure a second SL resource for the terminal, and includes one or more of the following: resource pool configuration information, SLRB configuration information, or synchronization configuration information.

The transceiver 1310 is also for: second SL configuration information is acquired from the neighboring cell before transceiver 1310 sends the second SL configuration information to the terminal.

Therefore, the device can send the second SL configuration information (the configuration information of the adjacent cells) to the terminal in the current service cell of the terminal, so that the terminal can acquire the SL configuration information of the adjacent cells in time or in advance, and the problem of SL communication interruption is effectively solved.

Alternatively, the device shown in fig. 13 may be an access network device, or may be a chip in the access network device.

It should be noted that, details of implementation and advantages of the steps performed by each unit and not mentioned in the embodiment corresponding to fig. 13 may be referred to the embodiments shown in fig. 4 and fig. 5 and the foregoing descriptions, and are not repeated here.

Fig. 14 is a schematic structural diagram of a wireless communication apparatus according to an embodiment of the present application, where the wireless communication apparatus is configured to perform steps performed by a terminal in an embodiment of a method corresponding to fig. 6 and fig. 7, where the wireless communication apparatus resides in a second cell, and a first access network device provides services for the second cell, and a second access network device provides services for a first neighboring cell. The apparatus may include: the reception unit 1410 determines whether the reception unit 1420, and the transmission unit 1430,

a receiving unit 1410, configured to receive a first system message SI from a second access network device.

The first SI includes first request configuration information, where the first request configuration information corresponds to a second SI (for example, SIB 3), and the second SI includes SL configuration information of a first neighboring cell. For example, the first system message SI is SIB1. The second access network device broadcasts the SIB1 through the first neighboring cell.

The determining unit 1420 determines, according to the first SI, the first request configuration information corresponding to the second SI. The first request configuration information is used for indicating first information for requesting the second SI to use and first time-frequency resources 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.

And a transmitting unit 1430 configured to transmit the first information to the second access network device on the first time-frequency resource.

The terminal initiates random access according to the first information and the first time-frequency resource corresponding to the second SI in the first SI, namely, the terminal sends the first information to the second access network equipment on the first time-frequency resource, and the second access network equipment can be instructed to broadcast the second SI through the first adjacent cell.

Optionally, the receiving unit 1410 of the wireless communication apparatus shown in fig. 14 is further configured to receive SL configuration information of the first neighboring cell. The SL configuration information of the first adjacent cell is SL configuration information sent to the device by the second access network equipment according to the first information.

Optionally, the wireless communication device of fig. 14 further comprises an acquisition unit 1440,

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

It can be seen that, by adopting the wireless communication device according to the embodiment of the present application, when the device currently serves a cell and can receive SL configuration information sent by a neighboring cell, and when the device resides in the neighboring cell under the condition that cell reselection is required, SL resources of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Alternatively, the device shown in fig. 14 may be a terminal, or may be a chip in the terminal.

It should be noted that, details of implementation and advantages of the steps performed by each unit and not mentioned in the embodiment corresponding to fig. 14 may be referred to the embodiments shown in fig. 6 and fig. 7 and the foregoing descriptions, and are not repeated here.

In one implementation, the relevant functions implemented by the various elements of FIG. 14 may be implemented in conjunction with a processor and transceiver. Fig. 15 is a schematic structural diagram of a wireless communication device according to an embodiment of the present application, where the device includes a transceiver 1510, a processor 1520, and optionally, a memory 1530, and the processor 1520, the transceiver 1510, and the memory 1530 are connected by one or more communication buses.

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

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

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

The first SI includes first request configuration information, where the first request configuration information corresponds to a second SI (for example, SIB 3), and the second SI includes SL configuration information of a first neighboring cell.

The transceiver 1510, the processor 1520 may call program code stored in the memory 1530 to perform: and determining first request configuration information corresponding to the second SI according to the first SI.

The first request configuration information is used for indicating first information for requesting the second SI to use and first time-frequency resources 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 further configured to transmit the first information to the second access network device on the first time-frequency resource.

The device initiates random access according to first information and first time-frequency resources corresponding to second SI in the first SI, that is, the device sends the first information to the second access network device on the first time-frequency resources, and the second access network device can be instructed to broadcast the second SI through a first adjacent cell.

Optionally, the transceiver 1510 of the wireless communication device shown in fig. 15 is further configured to receive SL configuration information of the first neighboring cell. The SL configuration information of the first adjacent cell is SL configuration information sent to the device by the second access network device according to the first information.

Optionally, the processor 1520 of the wireless communication device depicted in fig. 15 is also configured to,

and the SL resource of the first adjacent cell is acquired according to the SL configuration information of the first adjacent cell.

It can be seen that, by adopting the wireless communication device according to the embodiment of the present application, when the device can receive the SL configuration information of the neighboring cell from the neighboring cell, and when the device resides in the neighboring cell under the condition that the device needs to perform cell reselection, the SL resource of the neighboring cell can be obtained according to the SL configuration information of the neighboring cell.

Alternatively, the device shown in fig. 15 may be a terminal, or may be a chip in the terminal.

It should be noted that, details of implementation and advantages of the steps performed by each unit and not mentioned in the embodiment corresponding to fig. 15 may be referred to the embodiments shown in fig. 6 and fig. 7 and the foregoing descriptions, and are not repeated here.

Fig. 16 is a schematic structural diagram of a wireless communication apparatus according to an embodiment of the present application, where the wireless communication apparatus is configured to perform steps performed by a second network device in the method embodiment corresponding to fig. 6 and fig. 7, and the apparatus may include: a transmitting unit 1610 and a receiving unit 1620,

A sending unit 1610, configured to send a first system message SI.

The first SI includes first request configuration information, where the first request configuration information corresponds to a second SI (for example, SIB 3), and the second SI includes SL configuration information of a first neighboring cell. The first request configuration information is used for indicating first information for requesting the second SI to use and first time-frequency resources for transmitting the first information. For example, the first system message SI is SIB1. The apparatus broadcasts the SIB1 through a first neighboring cell.

A receiving unit 1620 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 apparatus further comprises a determining unit 1630, configured to determine the second SI according to the received first information.

Optionally, the transmitting unit 1610 is further configured to,

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

It can be seen that by adopting the wireless communication device according to the embodiment of the present application, even if the terminal resides 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 does not reside in the first neighboring cell, the SL configuration information of the first neighboring cell can be obtained, and the problem of SL communication interruption described in the present application is also solved.

Alternatively, the device shown in fig. 16 may be a terminal, or may be a chip in the terminal.

It should be noted that, details of implementation and advantages of the steps performed by each unit and not mentioned in the embodiment corresponding to fig. 16 may be referred to the embodiments shown in fig. 6 and fig. 7 and the foregoing descriptions, and are not repeated here.

In one implementation, the relevant functions implemented by the various elements of FIG. 16 may be implemented in conjunction with a processor and transceiver. Fig. 17 is a schematic structural diagram of a wireless communication device according to an embodiment of the present invention, where the device includes a transceiver 1710, a processor 1720, and optionally, a memory 1730, where the processor 1720, the transceiver 1710, and the memory 1730 are connected by one or more communication buses.

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

Memory 1730 is used for storing program codes and the like. Memory 1730 may include volatile memory, such as RAM; memory 1730 may also include non-volatile memory, such as ROM, flash memory, HDD, or SSD; memory 1730 may also include combinations of the above types of memory.

A transceiver 1710 for transmitting a first system message SI.

The transceiver 1710 is further configured to receive first information from a terminal on a 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, the processor 1720 may call program code stored in the memory 1730 to perform: and determining the second SI according to the received first information.

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

Alternatively, the device shown in fig. 17 may be an access network device, or may be a chip in the access network device.

It should be noted that, details of implementation and advantages of the steps performed by each unit and not mentioned in the embodiment corresponding to fig. 17 can be referred to the embodiments shown in fig. 6 and fig. 7 and the foregoing, and are not repeated here.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). 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 an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, storage Disk, tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

Claims

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;

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.