WO2023280101A1

WO2023280101A1 - Sl processing method and apparatus, and user equipment and readable storage medium

Info

Publication number: WO2023280101A1
Application number: PCT/CN2022/103624
Authority: WO
Inventors: 梁敬; 鲍炜
Original assignee: 维沃移动通信有限公司
Priority date: 2021-07-09
Filing date: 2022-07-04
Publication date: 2023-01-12
Also published as: CN115604775A

Abstract

The present application belongs to the technical field of communications. Disclosed are an SL processing method and apparatus, and a user equipment and a readable storage medium. The method comprises: a transport user equipment executing a first operation, wherein the first operation comprises at least one of the following: when a first object is not related to an SL DRX mechanism and a logical channel corresponding to a first destination meets a preset condition, determining the first destination as an alternative destination in an SL LCP process; when a first condition is met, executing a resource reselection operation, wherein the first condition meets at least one of the following: a first resource selected by the transport user equipment is within an inactive time of SL DRX corresponding to U alternative destinations, U being a positive integer; the transport user equipment has executed a second operation L times; and a first relationship does not conform to a second relationship, the first relationship being the relationship between a target object selected by the transport user equipment and the SL DRX mechanism, and the second relationship being the relationship between the alternative destination in the SL LCP process and the SL DRX mechanism; and selecting a second resource according to the relationship between a second object and the SL DRX mechanism.

Description

SL processing method, device, terminal and readable storage medium

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202110777864.4 filed in China on July 09, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application belongs to the technical field of communication, and in particular relates to an SL processing method, device, terminal and readable storage medium.

Background technique

In order to save terminal power consumption, a sidelink (Sidelink, SL) introduces a discontinuous reception (Discontinuous Reception, DRX) mechanism. Since the sending and receiving ends of the sidelink are all terminals, the behaviors of the receiving terminal (Receive UE, RX UE) and the transmitting terminal (Transport UE, TX UE) need to be defined. At present, it is only discussed that for RX UE, the time to start or restart the inactivity timer (inactivity timer) is after receiving the first (first) sidelink control information (Sidelink Control Information, SCI) and the second (second) SCI The next slot (slot) or symbol (symbol) after that. For TX UE, how to select the destination (Destination) in the SL Logical Channel Prioritization (LCP) process, and how to ensure that the data transmission will fall within the active time of the SL DRX corresponding to the RX UE However, there is currently no relevant solution.

Contents of the invention

Embodiments of the present application provide an SL processing method, device, terminal, and readable storage medium, which can solve the problem of destination selection in the SL LCP process and reduce the problem of data transmission being missed by the RX UE.

In the first aspect, a SL processing method is provided, including:

The sending terminal performs a first operation, where the first operation includes at least one of the following:

When the first object has nothing to do with the SL discontinuous reception DRX mechanism, and the logical channel corresponding to the first destination satisfies the preset condition, determine the first destination as a candidate in the SL logical channel priority LCP process Destination, the first object includes at least one of the following: the service to be sent by the sending terminal; the target object selected by the sending terminal; the first destination;

In the case where the first condition is satisfied, perform a resource reselection operation, the first condition meets at least one of the following: the first resource selected by the sending terminal is in the inactivation time of the SL DRX corresponding to the U alternative destinations In, U is a positive integer; the sending terminal has performed the second operation L times, and the second operation is: selecting the second destination as the final destination in the SL LCP process, and the second destination and the third The destinations corresponding to the objects are different, and the third object is the item with the highest priority among the media access control MAC control unit CE and the logical channel satisfying the preset condition; the first relationship does not match the second relationship, and the second The first relationship is the relationship between the target object selected by the sending terminal and the SL DRX mechanism, and the second relationship is the relationship between the alternative destination in the SL LCP process and the SL DRX mechanism;

Selecting a second resource according to the relationship between the second object and the SL DRX mechanism, where the second object includes at least one of the following: a target object selected by the sending terminal; an alternative destination in the SL LCP process.

In a second aspect, an SL processing device is provided, including:

The first execution module is configured to execute a first operation, and the first operation includes at least one of the following:

In a third aspect, a terminal is provided. The terminal includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor. When the program or instruction is executed by the processor The steps of the method described in the first aspect are realized.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to perform a first operation, and the first operation includes at least one of the following:

According to a fifth aspect, a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented.

A sixth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run programs or instructions, and implement the method as described in the first aspect .

In a seventh aspect, a computer program/program product is provided, the computer program/program product is stored in a non-volatile storage medium, and the computer program/program product is executed by at least one processor to implement the first method described above.

An eighth aspect provides a terminal configured to execute the steps of the method described in the first aspect.

In the embodiment of the present application, on the one hand, the sending terminal can determine the alternative destination in the SL LCP process based on the relationship between the first object and the SL DRX mechanism, and the relationship between the logical channel corresponding to the destination and the preset condition, Thereby, a solution to the selection of the destination in the SL LCP process is given; on the other hand, the sending terminal can perform resource selection through the relationship between the second object and the SL DRX mechanism, and/or, when sending data based on the selected resource When the data falls within the SL DRX inactive time corresponding to the destination and other conditions are met, resource reselection is triggered, thereby reducing the probability that the data sent by the sending terminal is missed by the RX UE and improving the effectiveness of data transmission.

Description of drawings

Fig. 1 is one of the schematic diagrams of the SL DRX provided by the embodiment of the present application;

Fig. 2 is the second schematic diagram of SL DRX provided by the embodiment of the present application;

FIG. 3 is a schematic diagram of a wireless communication system provided by an embodiment of the present application;

Fig. 4 is a flow chart of the SL processing method provided by the embodiment of the present application;

Fig. 5 is one of the schematic diagrams of the SL LCP process that the embodiment of the present application provides;

Fig. 6 is one of the schematic diagrams of the SL LCP process that the embodiment of the present application provides;

Fig. 7 is one of the schematic diagrams of resource reselection provided by the embodiment of the present application;

FIG. 8 is one of the schematic diagrams of resource reselection provided by the embodiment of the present application;

FIG. 9 is a schematic diagram of resource selection provided by an embodiment of the present application;

Fig. 10 is a structural diagram of the SL processing device provided by the embodiment of the present application;

FIG. 11 is one of the structural diagrams of a terminal provided in an embodiment of the present application;

FIG. 12 is the second structural diagram of the terminal provided by the embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and "second" distinguish objects. It is usually one category, and the number of objects is not limited. For example, there can be one or more target objects. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

It is worth noting that the technology described in the embodiment of this application is not limited to the Long Term Evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-Advanced, LTE-A) system, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th generation (6 ^th Generation, 6G) communication system.

For ease of understanding, the following describes some of the content involved in the embodiments of this application:

1. Discontinuous Reception (DRX) in the radio resource control (Radio Resource Control, RRC) connected (connected) state under the Uu interface.

The purpose of DRX is to save power, and a terminal in the DRX state (a terminal may also be referred to as a terminal device or a user equipment (User Equipment, UE)) does not need to be connected to monitor a control channel. However, if the terminal does not monitor the control channel for a long time, once data arrives, the delay of data transmission will be increased. In order to take into account power saving and transmission delay, according to the length of time the terminal monitors the channel, the 5th generation mobile communication (5th ^Generation , 5G) media access control (Media Access Control, MAC) supports two DRX cycles, DRX long cycle and DRX short cycle. If it is predicted that the terminal data volume is relatively frequent or the service is sensitive to delay, the network can configure the terminal to use DRX short cycle; if the terminal data volume is predicted to be sparse and the delay is not sensitive, the network can configure the terminal to only use DRX long cycle. In order to facilitate the switching of the DRX long cycle/DRX short cycle by the terminal, the DRX long cycle may be an integer multiple of the DRX short cycle, so as to ensure that the on-durations (onDuration) of the two are aligned.

In order to support the DRX mechanism, the base station will configure DRX-related timers and parameters for the terminal, which may specifically include at least one of the following:

DRX long cycle start offset (drx-LongCycleStartOffset): used to configure the cycle and offset of the long DRX cycle, and the unit of cycle and offset is milliseconds.

DRX short cycle (drx-ShortCycle): used to configure the cycle and offset of the short DRX cycle, and the unit of cycle and offset is millisecond.

DRX short cycle timer (drx-ShortCycleTimer): used to control the duration of the terminal using the short DRX cycle, the unit is an integer, indicating that once the terminal enters the short DRX cycle, it should maintain the short cycle that is an integer multiple.

DRX OnDuration Timer (drx-onDurationTimer): During the running of this timer, the terminal needs to continuously monitor the PDCCH control channel of the network. The timer unit is milliseconds.

DRX slot offset (drx-SlotOffset): The delay for the terminal to start or restart drx-onDurationTimer. This parameter is used to set the offset of the starting moment of DRX onDuration relative to the starting point of the subframe. The offset is 1/32 milliseconds Integer multiples of .

DRX inactivity timer (drx-InactivityTimer): This timer starts or restarts at the first symbol after the terminal receives the signaling of the Physical Downlink Control Channel (PDCCH) for new uplink/downlink data scheduling. During the running of the timer, the terminal needs to continuously monitor the control channel, and the unit of the timer is milliseconds.

Downlink (Downlink, DL) Hybrid Automatic Repeat Request (HARQ) Round Trip Time (RTT) timer (drx-HARQ-RTT-TimerDL): based on each downlink process maintenance, timer length is the minimum time interval from the HARQ feedback moment to receiving the HARQ retransmission for this process. Only when the data corresponding to the downlink process is not successfully decoded, the terminal will start or restart the timer at the first symbol after the HARQ negative acknowledgment (Negative Acknowledgment, NACK) feedback of the process. If the current terminal only has drx-HARQ-RTT-TimerDL and/or uplink (Uplink, UL) HARQ RTT timer (drx-HARQ-RTT-TimerUL) running, the terminal does not need to monitor the PDCCH control channel, and the timer unit is a symbol.

drx-HARQ-RTT-TimerUL: Maintained based on each uplink process, the timer length is the minimum time between the transmission moment of the Physical Uplink Shared Channel (PUSCH) and the receipt of the HARQ retransmission for the process interval. After the uplink PUSCH transmission, the terminal starts or restarts the uplink HARQ RTT timer for the uplink process. If PUSCH transmission uses PUSCH repetition (PUSCH repetition), then the uplink HARQ RTT timer starts or restarts after the first repetition of PUSCH, to It is ensured that the base station can terminate the repeated transmission of the PUSCH in time after parsing the PUSCH in advance. The timer units are symbols.

Downlink retransmission timer (drx-RetransmissionTimerDL): the next symbol after drx-HARQ-RTT-TimerDL times out starts or restarts the timer. During the running of the timer, the terminal monitors the control channel of the network, and stops the timer if it receives downlink scheduling information or a downlink configured grant for the process. The timer unit is a slot.

Uplink retransmission timer (drx-RetransmissionTimerUL): the next symbol after drx-HARQ-RTT-TimerUL expires starts or restarts the timer. During the running of the timer, the terminal monitors the control channel of the network, and stops running if it receives uplink scheduling information or uplink configured grant for the process. The timer unit is a time slot.

The above parameters can constitute a set of DRX configurations, and the UE can perform corresponding discontinuous reception operations according to the configurations.

As shown in FIG. 1 and FIG. 2 , in the time domain, time is divided into successive DRX cycles (Cycle).

2. A side link (Sidelink, SL) may also be called a side link, a side link, or the like.

The Long Term Evolution (LTE) system supports SL from the twelfth release version, which is used for direct data transmission between terminals without going through network equipment.

As shown in FIG. 3 , the wireless communication system may include a terminal 11 and a network side device 12 . Wherein, the communication between the terminals 11 may be performed through SL, and the communication between the terminal 11 and the network side device 12 may be performed through an uplink (Uplink, UL) and a downlink (Downlink, DL).

The design of LTE sidelink is suitable for specific public safety affairs (such as emergency communication in fire places or disaster places such as earthquakes), or vehicle to everything (V2X) communication, etc. Vehicle networking communication includes various services, such as basic safety communication, advanced (automatic) driving, platooning, sensor expansion and so on. Since LTE sidelink only supports broadcast communication, it is mainly used for basic security communication. Other advanced V2X services with strict Quality of Service (QoS) requirements in terms of delay and reliability will be supported by NR sidelink.

The 5G new air interface (New Radio, NR) system can be used in the operating frequency band above 6 megahertz (GHz) that LTE does not support, and supports a larger operating bandwidth. The current version of the NR system is studying the PC5 interface for direct communication between terminals. That is sidelink.

3. The transmission form of Sidelink.

Sidelink transmission is mainly divided into broadcast (broadcast), multicast (groupcast), and unicast (unicast) transmission forms. As the name implies, unicast is one-to-one (one to one) transmission. Multicast is one-to-many transmission. Broadcasting is also a one to many transmission, but broadcasting does not have the concept that terminals belong to the same group.

Sidelink unicast and multicast communication supports physical layer HARQ feedback mechanism.

Resource allocation modes (mode) can be divided into two categories:

1) Base Station Scheduling Mode (Mode 1): Controlled by network-side equipment (Base Station (BS)) and allocate SL resources for each UE (BS schedules SL resource(s) to be used by UE for SL transmission(s) )).

2) UE autonomous mode (Mode 2): Each UE independently selects SL resources, for example: the base station will not schedule SL transmission resources in the base station or network configuration or pre-configured SL resources (BS does not schedule, SL transmission resource (s)within SL resources configured by BS/network or pre-configured SL resources).

4. Uu Logical Channel Prioritization (LCP).

The network side allocates uplink radio resources based on UE granularity (per-UE) instead of bearer granularity (per-bearer). Which radio bearer data can be put into the allocated radio resources for transmission is determined by the UE.

Based on the uplink radio resources allocated by the uplink grant (UL grant), the UE needs to determine the total amount of data for each logical channel contained in the new MAC protocol data unit (Protocol Data Unit, PDU). If necessary, the UE also provides The MAC control unit (Control Element, CE) allocates resources. In other words, the uplink resource allocated to a certain UE by the network side through the UL grant is determined. Based on the configuration given by the RRC signaling logical channel configuration (LogicalChannelConfig) and the rules stipulated by the protocol, the UE decides which logical channels to place data and how much data to place on each logical channel.

There is only one MAC PDU, but there are multiple logical channels to be multiplexed, which requires assigning a priority to each logical channel. Data for the highest priority logical channel is included in the MAC PDU first, followed by data for the next highest priority logical channel, and so on, until the allocated MAC PDU is full or there is no more data to send. The priority of each logical channel is determined by the priority field of LogicalChannelConfig, the smaller the value, the higher the priority.

Five, sidelink LCP.

The basic logic is similar to Uu LCP, but because on the sidelink, TX UE may need to send data to multiple RX UEs at the same time, so it needs to meet the preset conditions in MAC CE first (if data is available, configure the authorization (configured grant) The corresponding type (type) and index (index) meet the conditions, the HARQ attributes meet the conditions, etc.) first select the destination (destination) corresponding to the logical channel (or MAC CE) with the highest priority, that is, confirm the transmission Who is the object of the peer. Afterwards, for all logical channels belonging to the destination, it is further judged whether all conditions are met, and a logical channel is selected for multiplexing.

In the embodiment of the present application, the terminal can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, Ultra-mobile personal computer (UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle equipment (Vehicle User Equipment, VUE), pedestrian terminal (Pedestrian User Equipment , PUE) and other terminal-side devices, wearable devices include: smart watches, bracelets, earphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal. The network side device may be a base station or a core network, where a base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, or a basic service set (Basic Service Set, BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, Wireless Local Area Network (WLAN) Access point, wireless fidelity (Wireless Fidelity, WiFi) node, transmitting and receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific Technical vocabulary, it should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The following describes the embodiments of the present application in detail through some embodiments and application scenarios in conjunction with the accompanying drawings.

The SL processing method in the embodiment of the present application can be executed by the TX UE, and in practical application, the TX UE can send data to one or more (at least two) RX UEs. The multiple RX UEs may have different versions of UEs, such as: UEs that do not support the version of the SL DRX mechanism, UEs that support the version of the SL DRX mechanism; or, UEs that need to do SL DRX and do not need to do SL DRX.

There is a corresponding relationship between the UE and the destination, and one UE may correspond to one or more UEs.

The SL LCP process can include:

The first type of SL LCP process: the sending terminal can select the logical channel with the highest priority among all MAC CEs and logical channels that meet the preset conditions or the destination corresponding to the MAC CE as the final destination in the SL LCP process, that is, Used for the destination when the TB is actually transmitted after the SL LCP process is completed, wherein the preset condition may include at least one of the following: data to be transmitted; associated SB _j value greater than 0 (SB _j >0); associated configuration The authorized resource type matches the current resource type; the associated configured authorized resource index matches the current resource; the associated HARQ attribute is not supporting HARQ, if the current resource does not include feedback resources.

The second type of SL LCP process: the sending terminal can select the logical channel with the highest priority or the destination corresponding to the MAC CE among all MAC CEs that meet the target conditions and logical channels that meet the preset conditions + target conditions, as the SL LCP process The final destination in , wherein the target condition reflects the impact of the SL DRX mechanism on the final destination selection, that is, considering whether the destination corresponding to the MAC CE/logic channel is in the activation time when the currently selected resource is sent, understandably, The destination corresponding to the MAC CE (or logical channel) that satisfies the target condition can satisfy: the sending resource is within the activation time of the destination.

It can be seen that the common points of these two types of SL LCP processes include: the destination corresponding to the MAC CE and the destination corresponding to the logical channel that meets the preset conditions can be determined as the candidate destinations in the SL LCP process.

The differences between these two types of SL LCP processes include: for the first type of SL LCP process, the sending terminal can directly select the final destination in the SL LCP process from the determined alternative destinations; and for the second type of SL LCP process , after the sending terminal determines the candidate destinations, it needs to further consider whether the candidate destinations meet the target conditions, so as to filter out the candidate destinations that meet the target conditions, and then select the SL from the candidate destinations that meet the target conditions The final destination in the LCP process. Therefore, the Type 2 SL LCP process can be regarded as an enhanced version of the Type 1 SL LCP process.

In the above description, the candidate destination is determined based on the judgment result of whether the logical channel corresponding to the destination satisfies the preset conditions, and the MAC CE corresponding to the destination, but it should be noted that the above method of determining the candidate destination is only The embodiment of the present application is a way to determine the alternative destination. The alternative destination in the embodiment of the present application can also be determined in other ways. For details, please refer to the subsequent description of the alternative destination, which will not be described here.

In addition, in the following description, when the type of the SL LCP process is not specified, the SL LCP process can be understood as the above-mentioned first type of SL LCP process, or as the above-mentioned second type of SL LCP process, which can be determined according to the actual situation It is determined that this is not limited in this embodiment of the present application.

As shown in Figure 4, the SL processing method may include the following steps:

Step 401, the sending terminal performs a first operation.

In this embodiment of the application, the first operation may, but is not limited to, include at least one of the following:

1) When the first object has nothing to do with the SL discontinuous reception DRX mechanism, and the logical channel corresponding to the first destination satisfies the preset condition, determine the first destination as the SL logical channel priority LCP process As an alternative destination, the first object includes at least one of the following: the service to be sent by the sending terminal; the target object selected by the sending terminal; the first destination;

2) In the case that the first condition is satisfied, perform resource reselection operation, the first condition meets at least one of the following: the first resource selected by the sending terminal is in the non-SL DRX corresponding to the U alternative destinations Within the activation time, U is a positive integer; the sending terminal has performed L times of second operations, and the second operations are: selecting the second destination as the final destination in the SL LCP process, and the second destination and The destination corresponding to the third object is different, and the third object is the item with the highest priority among the medium access control MAC control unit CE and the logical channel satisfying the preset condition; the first relationship does not match the second relationship, so The first relationship is the relationship between the target object selected by the sending terminal and the SL DRX mechanism, and the second relationship is the relationship between the alternative destination in the SL LCP process and the SL DRX mechanism;

3) Selecting a second resource according to the relationship between the second object and the SL DRX mechanism, the second object includes at least one of the following: the target object selected by the sending terminal; an alternative destination in the SL LCP process.

In 1), when the sending terminal determines the alternative destination, in addition to considering whether the logical channel satisfies the preset condition, it further considers whether the first object is related to the SL DRX mechanism, that is, the determined alternative destination also needs to satisfy : Whether the first object is related to the SL DRX mechanism. In practical applications, the embodiment of the present application does not limit the operation of determining whether the logical channel satisfies the preset condition, and the time sequence in which the operation of determining whether the first object is related to the SL DRX mechanism is performed. The above two determination operations can be performed successively. can also be executed simultaneously.

In this embodiment of the present application, the first object may include at least one of the following: a service to be sent by the sending terminal; a target object selected by the sending terminal; and the first destination. Therefore, the sending terminal may determine the first destination as an alternative destination when at least one of the following conditions is met, and the logical channel corresponding to the first destination satisfies a preset condition:

The business to be sent by the sending terminal has nothing to do with the SL DRX mechanism;

The target object selected by the sending terminal has nothing to do with the SL DRX mechanism;

The first destination has nothing to do with the SL DRX mechanism.

It can be understood that, for the destination corresponding to the MAC CE, the sending terminal may determine the destination as an alternative destination when at least one of the following conditions is met:

This destination is independent of the SL DRX mechanism.

During specific implementation, when the service to be sent by the sending terminal has nothing to do with the SL DRX mechanism, or when the target object selected by the sending terminal has nothing to do with the SL DRX mechanism, the sending terminal can use all MAC CEs and logical channels that meet the preset conditions The corresponding destination is determined as an alternative destination.

When a destination has nothing to do with the SL DRX mechanism, it can be considered that the destination is always active, and the terminal corresponding to the destination can receive the data sent by the RX UE. Therefore, the sending terminal can directly determine the destination as an alternative destination.

It can be seen that through 1), the sending terminal can determine the alternative destination in the SL LCP process based on the relationship between the first object and the SL DRX mechanism, and the relationship between the logical channel corresponding to the destination and the preset condition, thus giving A solution to the selection of the destination in the process of deciding the SL LCP.

In 2), the sending terminal may determine whether to perform resource reselection by determining whether the first condition is satisfied. Satisfying the first condition may be regarded as a trigger condition for resource reselection.

In specific implementation, 2) the resource reselection operation can be performed when at least one of the following is satisfied:

a) The first resource selected by the sending terminal is within the inactivation time of the SL DRX corresponding to the U alternative destinations;

b) the sending terminal performs the second operation L times;

c) The relationship between the target object selected by the sending terminal and the SL DRX mechanism does not match the relationship between the candidate destination in the SL LCP process and the SL DRX mechanism.

In a), the first resource may include a transmission resource corresponding to at least one transmission. The U alternatives may include some or all of the alternatives. In this case, since the selected first resource is within the inactive time of the U alternatives, when data is sent through the first resource, the U alternative destinations cannot receive the data due to the inactive time. data, will cause the RX UEs corresponding to the U destinations to miss reception of the data, resulting in low efficiency of data transmission. Therefore, the sending terminal can trigger resource reselection, so as to reduce the probability that the data sent by the sending terminal is missed by the RX UE, thereby improving the effectiveness of data transmission.

In b), the second operation can be understood as the final destination determination operation in the second type of SL LCP process, but the final destination selected by the second operation is not the destination P, and the destination P is: all MACs The destination corresponding to the logical channel or MAC CE with the highest priority among the CE and the logical channels that meet the preset conditions, indicating that when subsequent transmission is performed based on the currently selected resource, the resource is in the inactive time of the SL DRX corresponding to the destination P The number of times in is L. Therefore, the sending terminal can trigger resource reselection, so as to reduce the probability that the data sent by the sending terminal is missed by the RX UE corresponding to the destination P, thereby improving the effectiveness of data transmission.

In c), since the relationship between the two does not match, such as one is related to the SL DRX mechanism and the other is not related to the SL DRX mechanism, when subsequent transmissions are made based on the currently selected resource, the resource is likely to fall into an alternative destination During the inactive time, the effectiveness of data transmission is lower. Therefore, the sending terminal can trigger resource reselection, so as to reduce the probability that the data sent by the sending terminal is missed by the RX UE, thereby improving the effectiveness of data transmission.

It can be seen that through 2), the probability that the data sent by the sending terminal is missed by the RX UE can be reduced, and the effectiveness of data transmission can be improved.

In 3), the sending terminal may perform resource selection based on at least one of the following:

the target object selected by the sending terminal;

Alternate destination in SL LCP process.

During specific implementation, in an implementation manner, the sending terminal can perform resource selection based on the SL DRX information of the alternative destination, such as activation time information, so that the selected resource is within the activation time of the alternative destination as much as possible, Thereby, the probability that the data sent by the sending terminal is missed by the RX UE can be reduced, and the effectiveness of data transmission can be improved.

In another implementation, the sending terminal can perform resource selection based on the relationship between the above two items and the SL DRX mechanism, so that the selected resource is within the activation time of the alternative destination as much as possible, thereby reducing the amount of data sent by the sending terminal. The probability of being missed by RX UE improves the effectiveness of data transmission.

It should be noted that, 3) may be applicable to the selection of the resource pool, and may also be applicable to the selection of specific resources in the resource pool. In addition, for the SL bandwidth part (BandWidth Part, BWP) and SL carrier, the rules similar to 3) can be used for selection, that is, the SL BWP and SL carrier can be selected according to the relationship between the second object and the SL DRX mechanism.

It can be seen that through 3), the probability that the data sent by the sending terminal is missed by the RX UE can be reduced, and the effectiveness of data transmission can be improved.

It should be noted that in practical applications, 1), 2) and 3) can be implemented independently or in combination. For example: in one embodiment, the sending terminal can use the existing process for resource selection, and can use 2) to perform resource reselection. During resource reselection, it can use the existing process for resource reselection, or use 3) Perform resource reselection; in another embodiment, the sending terminal may directly perform resource selection through 3), and further, may also perform resource reselection through 2). Of course, it can be understood that, in the above two embodiments, the sending terminal can determine the alternative destination in the SL LCP process by using the existing process, or can determine the alternative destination in the SL LCP process through 1).

After the sending terminal completes the SL LCP process, it can send data based on the selected resources. In specific implementation, the SL LCP process can be implemented based on 1) or based on existing processes; the selected resources can be resources selected through existing processes, or resources selected through 2) and/or 3), specifically It may be determined according to actual conditions, which is not limited in this embodiment of the present application.

In the SL processing method of the present application, on the one hand, the sending terminal can determine the alternative destination in the SL LCP process based on the relationship between the first object and the SL DRX mechanism, and the relationship between the logical channel corresponding to the destination and the preset condition, Thereby, a solution to the selection of the destination in the SL LCP process is given; on the other hand, the sending terminal can perform resource selection through the relationship between the second object and the SL DRX mechanism, and/or, when sending data based on the selected resource When the data falls within the SL DRX inactive time corresponding to the destination and other conditions are met, resource reselection is triggered, thereby reducing the probability that the data sent by the sending terminal is missed by the RX UE and improving the effectiveness of data transmission.

In this embodiment of the application, optionally, the alternative destination may include at least one of the following:

The destination corresponding to the MAC CE;

The destination corresponding to the first logical channel, where the first logical channel includes at least one of the following: a logical channel that satisfies a preset condition; a logical channel that triggers resource selection; and at least some of the logical channels with data.

In this optional implementation manner, when the sending terminal determines an alternative destination in the SLL LCP process based on the logical channel corresponding to the destination, it may specifically be based on whether the logical channel corresponding to the destination satisfies the preset condition and the logical channel corresponding to the destination. It is determined whether the channel triggers resource selection and whether the logical channel corresponding to the destination has data transmission.

The sending terminal may identify at least one of the following as an alternate destination in the SL LCP procedure:

Destinations corresponding to logical channels that meet preset conditions;

The destination corresponding to the MAC CE;

The destination corresponding to the logical channel that triggers resource selection;

Destinations corresponding to at least some of the logical channels with data.

In the embodiments of the present application, at least part may be understood as part or all. At least some logical channels in the logical channels with data may be specifically represented as at least one of the following: destinations corresponding to all logical channels with data; logical channels with the highest priority among all logical channels with data.

In this embodiment of the present application, the target object selected by the sending terminal may be any object related to data transmission. Optionally, the target object includes at least one of the following: resource pool; SL bandwidth part (BandWidth Part, BWP); SL carrier (carrier).

The contents involved in the above 1), 2) and 3) are described in detail below:

for 1)

The following describes how the sending terminal determines whether the first destination is related to the SL DRX mechanism.

Optionally, when the first object is the first destination, before the sending terminal performs the first operation, the method may further include:

The sending terminal determines that the first destination has nothing to do with the SL DRX mechanism when the second condition is met, and the second condition may include at least one of the following:

i) The sending terminal receives the first indication information sent by the first receiving terminal, and the first indication information indicates that the first destination has nothing to do with the SL DRX mechanism;

ii) The sending terminal fails to perform DRX configuration interaction with the first receiving terminal;

iii) There is no mapping relationship between the identification information of the first destination and the SL DRX mechanism;

Wherein, the first receiving terminal is a terminal corresponding to the first destination.

In this optional implementation manner, whether the first destination is related to the SLDRX mechanism may be indicated by the terminal corresponding to the first destination (hereinafter referred to as the first receiving terminal), or may be indicated by the sending terminal based on its The situation of performing DRX configuration interaction with the first receiving terminal may also be determined by the sending terminal by querying the mapping relationship between the identification information of the destination and the SL DRX mechanism.

In i), the first receiving terminal may indicate whether the first destination is related to the SL DRX mechanism. During specific implementation, optionally, the first indication information may be carried in any of the following: a configuration file (Profile); capability (capability) information.

In ii), the sending terminal may perform DRX configuration interaction with the first receiving terminal, and if the interaction fails, it may be determined that the first receiving terminal has nothing to do with the SL DRX mechanism.

In iii), the sending terminal can first obtain the mapping relationship between the identification information of the destination and the SL DRX mechanism, and the mapping relationship can be predefined by the protocol or configured by the network side device. In this mapping relationship, the identification information of the destination related to the SL DRX mechanism can be included. If the sending terminal does not query the identification information of the first destination in the mapping relationship, it can be determined that the first receiving terminal and the SL DRX mechanism irrelevant. In this way, compared with i), iii) can not only reduce signaling overhead, but also be applicable to terminals that do not support capability interaction.

It can be seen that, through the above method, the sending terminal can determine whether the first destination is related to the SL DRX mechanism in multiple ways, thereby improving the flexibility of determining whether the first destination is related to the SL DRX mechanism.

The expression form of "the first object has nothing to do with the SL DRX mechanism" is described below:

Optionally, the first object has nothing to do with the SL DRX mechanism, and may include at least one of the following:

The first object is an object of a first version that does not support the SL DRX mechanism;

The first object is not applicable to SL DRX mechanism.

During specific implementation, the first version may be version 16 (Release 16) and previous versions, that is, Release 16 and previous versions do not support the SL DRX mechanism, and versions after Release 16 support the SL DRX mechanism. The first object is an object of the first version, which can be understood as: the first object corresponds to the first version.

In the case where the first object is represented as the first destination, the first object is an object of the first version, which may specifically be represented as: the first destination and/or the terminal corresponding to the first destination corresponds to the first version ; The first object is not applicable to the SL DRX mechanism, which can be specifically shown as: the first destination and/or the terminal corresponding to the first destination is not applicable to the SL DRX mechanism, which can be determined according to the actual situation. No limit.

In 1), optionally, the method may also include at least one of the following:

The sending terminal gives up performing the third operation, and the third operation is: determining whether the selected resource belongs to the activation time of the SL DRX corresponding to the first destination;

The sending terminal determines that the first destination is always at an active time.

During specific implementation, the above steps may be applicable to any of the following processes: selecting a destination; performing new transmission or retransmission, but not limited thereto.

For example: when selecting a destination, the sending terminal does not need to consider whether the selected resource belongs to the activation time of the SL DRX corresponding to the destination;

When selecting a destination, the sending terminal can consider that the destination is always active;

When performing new transmission or retransmission, the sending terminal may consider that the destination is always in the active time.

It can be seen that in 1), when the first object has nothing to do with the SL discontinuous reception DRX mechanism, the sending terminal may not consider whether the sending resource is within the activation time of the relevant destination, so that the flexibility of destination selection can be improved .

for 2)

Optionally, the first resource includes K resources, and the K resources are in one-to-one correspondence with K transmissions, and K is a positive integer. The K resources may include at least one of the following: initial transmission resources; retransmission resources. The K resources may or may not be periodic resources, which may be determined according to actual conditions, and are not limited in this embodiment of the present application.

During specific implementation, the sending terminal may trigger resource reselection when the K resources fall within the inactivation time of the SL DRX corresponding to the U candidate destinations.

Optionally, the U alternative destinations may include at least one of the following:

Destination corresponding to at least one MAC CE;

at least some of the destinations corresponding to the logical channels satisfying the preset condition;

The destination corresponding to the logical channel with the highest priority that meets the preset conditions.

During specific implementation, the at least part of the destinations may be any of the following:

Destinations corresponding to logical channels that all meet the preset conditions;

M destinations among destinations corresponding to logical channels that all meet the preset conditions, M is a positive integer less than or equal to U;

N% of the destinations corresponding to all logical channels satisfying the preset condition, the number of N% of the destinations is less than or equal to U.

Optionally, the first relationship does not match the second relationship, including at least one of the following:

The target object selected by the sending terminal has nothing to do with the SL DRX mechanism, and the alternative destinations in the SL LCP process are all related to the SL DRX mechanism;

The target object selected by the sending terminal is related to the SL DRX mechanism, and the alternative destinations in the SL LCP process are not related to the SL DRX mechanism.

For example, if the resource pool selected by the TX UE is a resource pool of a non-Release 17 version, but when performing LCP based on the currently selected resources, there is no UE corresponding to any destination that is a UE of a non-Release 17 version, and the TX UE can perform resource reselection.

If the resource pool selected by the TX UE is a Release 17 resource pool (or SL BWP/SL carrier), but when performing LCP based on the currently selected resources, there is no UE corresponding to any destination that is a Release 17 UE, and the TX UE can perform Resource reselection.

for 3)

Optionally, the selecting the second resource according to the relationship between the second object and the SL DRX mechanism includes:

When the third condition is met, select the second resource;

Wherein, the third condition includes at least one of the following:

The second resource is within the activation time of SL DRX corresponding to at least one alternative destination;

The first relationship matches the second relationship.

In specific implementation, the second resource is similar to the first resource in 2), and the at least one candidate destination is similar to the U candidate destinations in 2), but they may actually be the same or different.

Optionally, the first relationship is consistent with the second relationship, and may include at least one of the following:

The target object selected by the sending terminal has nothing to do with the SL DRX mechanism, and at least one destination among the candidate destinations in the SL LCP process has nothing to do with the SL DRX mechanism;

The target object selected by the sending terminal is related to the SL DRX mechanism, and at least one destination among the candidate destinations in the SL LCP process is related to the SL DRX mechanism.

For example: if resource pool X is not applicable to SL DRX, and when LCP is performed based on resource pool X, at least one UE corresponding to the destination is not applicable to SL DRX mechanism, then the TX UE can select resource pool X.

If the resource pool X is a resource pool applicable to the SL DRX mechanism, and when LCP is performed based on the resource pool X, there is at least one UE corresponding to the destination that is applicable to the SL DRX mechanism, then the TX UE can select the resource pool X.

Optionally, before the selection of the second resource, the method further includes:

The sending terminal obtains SL DRX information corresponding to an alternative destination in the SL LCP process, and the DRX information includes at least SL DRX activation time information.

During specific implementation, the acquiring operation may be acquiring by receiving, or acquiring by reading a protocol.

In the scenario of receiving and acquiring, the UE corresponding to each alternative destination can send its own SL DRX information to the TX UE to assist the TX UE in resource selection. During specific implementation, the SL DRX information may be notified by the MAC layer of the RX UE to the physical layer of the TX UE, but not limited thereto.

It should be noted that the various optional implementation manners introduced in the embodiments of the present application may be implemented in combination with each other or implemented independently, which is not limited in the embodiments of the present application.

For ease of understanding, the examples are as follows:

Solution 1: If the TX UE's own business or resource pool does not belong to Release 17 or does not apply to DRX; or, the TX UE finds that the destination and/UE of the peer end does not belong to Release 17 or does not apply to DRX; then, the TX UE does not perform LCP enhancement, That is, in the LCP, it is considered whether the sending resource is within the active time of the relevant destination.

During the LCP process, when at least one of the following conditions is met, the TX UE performs related operations:

a) TX UE is going to send non-Release 17 version services (such as Release 16 services, Release 15 services, etc.);

b) TX UE is going to send services that are not applicable to SL DRX (such as basic safety (basic safety), public safety (public safety) services, etc.);

c) The resource pool selected by the TX UE is a resource pool of a non-Release 17 version or a resource pool not applicable to SL DRX;

d) The SL BWP (or SL carrier) selected by the TX UE is the SL BWP (or SL carrier) of the non-Release 17 version or the SL BWP (or SL carrier) that is not applicable to SL DRX;

e) The TX UE has received the TX profile sent by the destination, indicating that the destination is a UE of a non-Release 17 version, or indicating that the destination does not apply SL DRX;

f) The TX UE has received the capability information sent by the destination, indicating that the destination is a non-Release 17 UE, or indicating that the destination does not apply SL DRX;

g) The TX UE fails to perform DRX configuration interaction with the UE corresponding to the destination, so DRX will not be applied subsequently;

h) There is a mapping relationship between the Destination ID and the Release version and/or whether SL DRX is applied, and the TX UE learns that the destination is a UE of a version other than Release 17 based on the mapping relationship, or that the destination does not apply SL DRX.

a)-d): It is equivalent to that all destinations meet the selection conditions at this time, and can be selected normally, and then execute the existing LCP process, that is, consider the logical channel with the highest priority among all logical channels (or MAC CE) that meet the conditions (or MAC CE) corresponding destination.

e)-g): In these cases, these destinations that are not related to the SL DRX mechanism will not be excluded because the selected resource is not within the active time of the DRX corresponding to the destination.

The related operations may refer to at least one of the following:

When selecting a destination, it is not necessary to consider whether the selected transmission resource belongs to the active time of the SL DRX corresponding to the destination (that is, the destination always (always) satisfies the selected condition);

When selecting a destination, it is considered that the destination is always in active time;

When a new transmission or retransmission is performed, the destination is considered to be active time.

Solution 2: The effect on resource selection of the peer UE or destination, whether SL DRX is applied or whether it is a UE of a non-Release 17 version.

Method 1: Follow the existing process when selecting, and trigger re-selection when there is a problem.

After the TX UE completes resource selection, it starts LCP. In the process of LCP, in addition to the existing LCP process, additional consideration is required. For the selected destination, if the selected resource is used for transmission, will the sent data be in the inactive time of the SL DRX corresponding to the destination? Inside.

When at least one of the following conditions is met, the UE triggers the resource reselection procedure:

When subsequent transmission is performed based on the currently selected resource, the resource is within the non-active time of the SL DRX corresponding to all (or at least M or at least N%) alternative Destinations, where the alternative Destination refers to satisfying the existing LCP conditions, That is, for all logical channels that meet the conditions or the destination associated with MAC CE;

It is expected that the transmission resources (including initial transmission and/or retransmission) of subsequent transmissions greater than or equal to K times will fall within the inactive time of SL DRX corresponding to all (or at least M or at least N%) candidate Destinations, K is configured or pre-configured by the base station or stipulated in the agreement;

When subsequent transmission is performed based on the currently selected resource, the resource is within the inactive time of the SL DRX corresponding to the destination P, and the destination P is the logic with the highest priority among the Destination associated with the MAC CE or the logical channel that meets the preset conditions The destination corresponding to the channel;

It is expected that subsequent transmission resources (including initial transmission and/or retransmission) greater than or equal to K times will fall within the inactive time of the SL DRX corresponding to destination P, and the K is configured or pre-configured by the base station or agreed by the agreement;

When performing subsequent transmissions based on the currently selected resource, the number of times the Destination actually selected for transmission does not include the highest priority logical channel is greater than or equal to L times, and the L is configured or pre-configured by the base station or agreed by the agreement, that is, based on the current selection When the resource of the resource is sent subsequently, the resource is greater than or equal to L times in the non-active time of the SL DRX corresponding to the destination P;

The resource pool (or SL BWP/SL carrier) selected by the TX UE is a non-Release 17 version resource pool (or SL BWP/SL carrier), but when performing LCP based on the currently selected resources, there is no UE corresponding to any destination as non-Release UE version 17;

The resource pool (or SL BWP/SL carrier) selected by the TX UE is the resource pool (or SL BWP/SL carrier) of the Release 17 version, but when performing LCP based on the currently selected resources, there is no UE corresponding to the destination of the Release 17 version UE;

The resource pool (or SL BWP/SL carrier) selected by the TX UE is a resource pool (or SL BWP/SL carrier) that does not apply to SL DRX, but when performing LCP based on the currently selected resources, there is no UE corresponding to the destination. SL DRX UE;

The resource pool (or SL BWP/SL carrier) selected by the TX UE is the resource pool (or SL BWP/SL carrier) applicable to SL DRX, but when performing LCP based on the currently selected resources, there is no UE corresponding to any destination that applies SL DRX UE.

Method 2: When selecting resources, consider the impact of the business to select a resource pool (or SL BWP/SL carrier).

When at least one of the following conditions is met, the TX UE selects resource pool X (or SL BWP/SL carrier):

When subsequent sending is performed based on the resource pool X, the resources in the resource pool X are within the active time of the SL DRX corresponding to at least one (or at least M or at least N%) alternative Destinations;

Resource pool X (or SL BWP/SL carrier) is a non-Release 17 resource pool (or SL BWP/SL carrier), and when LCP is performed based on resource pool X, at least one UE corresponding to the destination is a non-Release 17 version UE;

Resource pool X (or SL BWP/SL carrier) is a Release 17 resource pool (or SL BWP/SL carrier), and when LCP is performed based on resource pool X, at least one UE corresponding to the destination is a Release 17 UE;

Resource pool X (or SL BWP/SL carrier) is a resource pool (or SL BWP/SL carrier) that does not apply SL DRX, and when LCP is performed based on resource pool X, there is at least one UE corresponding to the destination that does not apply SL DRX UE;

Resource pool X (or SL BWP/SL carrier) is a resource pool (or SL BWP/SL carrier) applicable to SL DRX. When LCP is performed based on resource pool X, at least one UE corresponding to the destination is a UE applying SL DRX.

Solution 3: In the resource selection stage, inform the physical layer of SL DRX information such as active time to assist in resource selection.

When the UE performs resource selection, the MAC layer notifies the physical layer of the active time information corresponding to the alternative destination to assist the physical layer in resource selection.

The alternative destination can be at least one of the following:

When resource selection is triggered, one or more destinations corresponding to logical channels with data;

When resource selection is triggered, the destination corresponding to the logical channel with the highest priority among all logical channels with data.

Describe below in conjunction with embodiment:

Embodiment 1: Example 1 of the LCP process.

As shown in Figure 5, the LCP process may include the following steps:

Step 501: UE receives configuration from base station, and base station configures sidelink resource allocation mode 2 for UE.

That is, the base station configures sidelink resource allocation mode 2 for the UE.

Step 502: When there is data available in the logical channel, the UE performs resource selection.

When the UE performs resource selection, it selects a certain resource pool X, which is a resource pool of a version other than Release 17 or a resource pool not applicable to SL DRX.

Step 503: Based on the generated sidelink grant, the UE performs HARQ-related operations and triggers a new transmission.

That is, the UE performs HARQ-related operations based on the generated sidelink grant, and triggers a new transmission.

Step 504: The UE starts to perform a sidelink LCP process.

At this time, because the resource pool X is not a Release 17 resource pool or a resource pool that is not applicable to SL DRX, the UE considers that all destinations belong to the active time, so it directly selects the Destination corresponding to the MAC CE or the logical channel that meets the preset conditions. The destination corresponding to the highest priority logical channel. That is, during the LCP process, it is not necessary to consider whether the resources sent based on the resource pool X will fall within the active time of the SL DRX corresponding to the destination.

Step 505: Based on the selected destination, the UE further selects a logical channel that belongs to the destination and satisfies the conditions, and performs multiplexing.

Embodiment 2: Example 2 of the LCP process.

As shown in Figure 6, the LCP process may include the following steps:

Step 601: UE A and UE B establish a unicast connection, and exchange destination link layer identifiers with each other.

Among them, the destination link layer identifier is the destination L2 ID.

During the capability interaction of the unicast connection, UE A knows that UE B (that is, the destination L2 ID corresponding to UE B) is a Release 16 UE or that UE B does not support sidelink DRX.

Step 602: The UE receives the configuration from the base station, and the base station configures sidelink resource allocation mode 2 for UE A.

Step 602 and step 601 may have any timing relationship.

Step 603: When there is data available in the logical channel, UE A performs resource selection and selects a certain resource pool Y.

Step 604: UE A performs HARQ-related operations based on the generated sidelink grant, and triggers a new transmission.

Step 605: UE A starts the sidelink LCP process.

When selecting the destination, the UE excludes some destinations from the optional range based on the selected resource pool Y. These destinations will cause the resource pool Y to send, which will fall within the inactive time of the SL DRX corresponding to these destinations. As a result, these destinations cannot actually receive the transmission of the TX UE. For the destination corresponding to the previous UE-B, since UE A knows that the destination is a Release 16 UE or does not support sidelink DRX, the destination will not be excluded in this step, that is, UE A thinks that the resource pool Y is used for When sending, the destination is always active time.

Embodiment 3: resource reselection.

As shown in Figure 7, resource reselection may include the following steps:

Step 701: UE receives configuration from base station, and base station configures sidelink resource allocation mode 2 for UE.

Step 702: When there is data available in the logical channel, the UE performs resource selection and selects a certain resource pool K.

Step 703: Based on the generated sidelink grant, the UE performs HARQ-related operations and triggers a new transmission.

Step 704: The UE starts to perform the sidelink LCP process.

In the LCP process, the Destination corresponding to the MAC CE or the destination corresponding to the logical channel with the highest priority among the logical channels meeting the preset conditions is selected as the final Destination. However, before the actual transmission, it is found that if the resource pool K is used for transmission, it will fall within the inactive time of the SL DRX corresponding to the final destination, and the TX UE can perform step 5.

Step 705: UE triggers resource reselection.

Embodiment 4: Resource reselection

As shown in Figure 8, resource reselection may include the following steps:

Step 801: UE receives configuration from base station, and base station configures sidelink resource allocation mode 2 for UE.

Step 802: When there is data available in the logical channel, the UE performs resource selection and selects a certain resource pool K.

Step 803: Based on the generated sidelink grant, the UE performs HARQ-related operations and triggers a new transmission.

Step 804: UE starts to perform side link LCP process.

In the LCP process, the Destination corresponding to the MAC CE or the destination corresponding to the logical channel that is active at the active time and has the highest logical channel priority among the destinations associated with the logical channel that meets the preset conditions is selected as the final Destination. After the LCP is completed, the data is sent.

Step 805: If the number of times that the finally selected destination does not include the highest priority logical channel is greater than or equal to L times, trigger resource reselection.

Embodiment 5: resource selection.

As shown in Figure 9, resource selection may include the following steps:

Step 901: UE receives configuration from base station, and base station configures sidelink resource allocation mode 2 for UE.

Step 902: When there is data available in the logical channel, the UE performs resource selection.

When selecting, if a certain resource pool T is found, it will cause all (or at least N) logical channels (or MAC CE) corresponding destinations with data to send when using the resource pool T. During the non-active time of SL DRX corresponding to these destinations, this resource pool will not be selected. In other words, the UE needs to select a resource pool to ensure that when the resource pool is used for transmission, it will fall within the active time of the SL DRX of the destination corresponding to at least X1 logical channels (or MAC CEs) that currently have data. Alternatively, the UE needs to select a resource pool to ensure that when the resource pool is used for transmission, it will fall within the active time of the SL DRX of the destination Y1, and the destination Y1 is the Destination corresponding to the MAC CE or a logical channel that meets the preset conditions The destination corresponding to the highest priority logical channel.

Step 903: Based on the generated sidelink grant, the UE performs HARQ-related operations and triggers a new transmission.

Step 904: UE starts to perform side link LCP process.

The embodiment of this application includes the following contents:

When the UE sends a non-Release 17 version service (or a service that is not applicable to DRX), or the selected resource pool is a non-Release 17 version resource pool or a resource pool that is not applicable to SL DRX, when the destination is selected during the LCP process, There is no need to exclude the destination because the sending resource may fall within the non-active time corresponding to the SL DRX of the destination (that is, the destination is always considered to be in the active time);

When the UE performs capability interaction with the UE of a certain destination or the DRX configuration fails, or based on the mapping relationship, it is known that the UE corresponding to the destination is a non-Release 17 version or does not apply to DRX. It will fall into the non-active time corresponding to the SL DRX of the destination, and exclude the destination (that is, always think that the Destination is in the active time);

During the LCP process, if the UE finds that the transmission resource may fall within the inactive time of SL DRX corresponding to a certain destination, it will trigger resource reselection. A certain destination can be corresponding to all destinations or the highest priority logical channel that meets the selection conditions destination;

At the beginning of resource selection, the UE needs to consider the selected resources, so that the transmission resources may not fall into the non-active time of SL DRX corresponding to a certain destination. A certain destination can be all destinations or the highest one that meets the selection conditions. The destination corresponding to the priority logical channel

Through the embodiment of the present application, the LCP process can be made more flexible when selecting the destination, and can also make the resource selection more reasonable, so as to prevent the data of the sender from being missed by the receiver.

It should be noted that, the SL processing method provided in the embodiment of the present application may be executed by an SL processing device, or a control module in the SL processing device for executing the SL processing method. In the embodiment of the present application, the SL processing device provided in the embodiment of the present application is described by taking the SL processing device executing the SL processing method as an example. As shown in Figure 10, the SL processing device 1000 includes:

The first executing module 1001 is configured to execute a first operation, where the first operation includes at least one of the following:

Optionally, the SL processing device 1000 further includes:

A determining module, configured to determine that the first destination has nothing to do with the SL DRX mechanism when the second condition is met, and the second condition includes at least one of the following:

The sending terminal receives the first indication information sent by the first receiving terminal, and the first indication information indicates that the first destination has nothing to do with the SL DRX mechanism;

The sending terminal fails to perform DRX configuration interaction with the first receiving terminal;

There is no mapping relationship between the identification information of the first destination and the SL DRX mechanism;

Optionally, the first indication information is carried in any of the following: configuration file; capability information.

Optionally, the first object has nothing to do with the SL DRX mechanism, and includes at least one of the following:

The first object is not applicable to SL DRX mechanism.

Optionally, when the first operation includes: determining the first destination as an alternative destination in the SL LCP process, the SL processing device 1000 further includes a second execution module for the following At least one of:

Give up performing the third operation, the third operation is: determine whether the selected resource belongs to the activation time of the SL DRX corresponding to the first destination;

It is determined that the first destination is always active.

Optionally, the first resource includes K resources, and the K resources are in one-to-one correspondence with K transmissions, and K is a positive integer.

Optionally, the U alternative destinations include at least one of the following:

Destination corresponding to at least one MAC CE;

When the third condition is met, select the second resource;

Wherein, the third condition includes at least one of the following:

The first relationship matches the second relationship.

Optionally, the first relationship is consistent with the second relationship, including at least one of the following:

Optionally, the SL processing device 1000 further includes:

An acquisition module, configured to acquire SL DRX information corresponding to an alternative destination in the SL LCP process, where the DRX information includes at least activation time information of SL DRX.

Optionally, the alternative destinations include at least one of the following:

The destination corresponding to the MAC CE;

The SL processing device in the embodiment of the present application may be a device, a device with an operating system or an electronic device, or it may be a component in a terminal, an integrated circuit, or a chip. The apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.

The SL processing device 1000 provided in the embodiment of the present application can realize various processes realized by the method embodiment in FIG. 4 and achieve the same technical effect. To avoid repetition, details are not repeated here.

Optionally, as shown in FIG. 11 , this embodiment of the present application also provides a terminal 1100, including a processor 1101, a memory 1102, and programs or instructions stored in the memory 1102 and executable on the processor 1101. When the programs or instructions are executed by the processor 1101, the various processes of the above-mentioned method embodiment in FIG. 4 can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, and the processor is used for:

Executing a first operation, where the first operation includes at least one of the following:

In the case where the first condition is satisfied, perform resource reselection operation, the first condition meets at least one of the following: the first resource selected by the sending terminal is in the inactivation time of the SL DRX corresponding to the U alternative destinations In, U is a positive integer; the sending terminal has performed the second operation L times, and the second operation is: selecting the second destination as the final destination in the SL LCP process, and the second destination and the third The destinations corresponding to the objects are different, and the third object is the item with the highest priority among the media access control MAC control unit CE and the logical channel satisfying the preset condition; the first relationship does not match the second relationship, and the second The first relationship is the relationship between the target object selected by the sending terminal and the SL DRX mechanism, and the second relationship is the relationship between the alternative destination in the SL LCP process and the SL DRX mechanism;

This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 7 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

The terminal 1200 includes, but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210, etc. at least some of the components.

Those skilled in the art can understand that the terminal 1200 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 1210 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 12 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in the embodiment of the present application, the input unit 1204 may include a graphics processor (Graphics Processing Unit, GPU) 12041 and a microphone 12042, and the graphics processor 12041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and other input devices 12072 . Touch panel 12071, also called touch screen. The touch panel 12071 may include two parts, a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, the radio frequency unit 1201 receives the downlink data from the network side device, and processes it to the processor 1210; in addition, sends the uplink data to the network side device. Generally, the radio frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1209 can be used to store software programs or instructions as well as various data. The memory 1209 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 1209 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1210 may include one or more processing units; optionally, the processor 1210 may be integrated into an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc. , the modem processor mainly handles wireless communication, such as the baseband processor. It can be understood that the foregoing modem processor may not be integrated into the processor 1210 .

Wherein, the processor 1210 is used for:

It should be noted that the terminal 1200 in this embodiment can implement each process in the method embodiment in FIG. 4 in the embodiment of the present application, and achieve the same beneficial effect. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by the processor, the various processes of the above-mentioned method embodiment in FIG. 4 are realized, and the same To avoid repetition, the technical effects will not be repeated here.

Wherein, the processor is the processor in the terminal described in the foregoing embodiments. The readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above-mentioned method embodiment in Figure 4 Each process, and can achieve the same technical effect, in order to avoid repetition, will not repeat them. It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

The embodiment of the present application further provides a computer program product/program product, the computer program product/program product is stored in a non-volatile storage medium, and the computer program product/program product is executed by at least one processor to realize Each process of the above method embodiment can achieve the same technical effect, so in order to avoid repetition, details are not repeated here.

The embodiment of the present application also provides a terminal configured to execute the processes in the above method embodiments, and achieve the same technical effect. To avoid repetition, details are not repeated here.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The above embodiment of the application has been described with reference to the accompanying drawings, but the application is not limited to the above specific implementation. The above specific implementation is only illustrative, rather than restrictive. Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A sidelink SL processing method, comprising:

The sending terminal performs a first operation, where the first operation includes at least one of the following:

When the first object has nothing to do with the SL discontinuous reception DRX mechanism, and the logical channel corresponding to the first destination satisfies the preset condition, determine the first destination as a candidate in the SL logical channel priority LCP process Destination, the first object includes at least one of the following: the service to be sent by the sending terminal; the target object selected by the sending terminal; the first destination;

In the case where the first condition is satisfied, perform a resource reselection operation, the first condition meets at least one of the following: the first resource selected by the sending terminal is in the inactivation time of the SL DRX corresponding to the U alternative destinations In, U is a positive integer; the sending terminal has performed the second operation L times, and the second operation is: selecting the second destination as the final destination in the SL LCP process, and the second destination and the third The destinations corresponding to the objects are different, and the third object is the item with the highest priority among the media access control MAC control unit CE and the logical channel satisfying the preset condition; the first relationship does not match the second relationship, and the second The first relationship is the relationship between the target object selected by the sending terminal and the SL DRX mechanism, and the second relationship is the relationship between the alternative destination in the SL LCP process and the SL DRX mechanism;

Selecting a second resource according to the relationship between the second object and the SL DRX mechanism, where the second object includes at least one of the following: a target object selected by the sending terminal; an alternative destination in the SL LCP process.
The method according to claim 1, wherein, when the first object is the first destination, before the sending terminal performs the first operation, the method further comprises:

The sending terminal determines that the first destination has nothing to do with the SL DRX mechanism when the second condition is met, and the second condition includes at least one of the following:

The sending terminal receives the first indication information sent by the first receiving terminal, and the first indication information indicates that the first destination has nothing to do with the SL DRX mechanism;

The sending terminal fails to perform DRX configuration interaction with the first receiving terminal;

There is no mapping relationship between the identification information of the first destination and the SL DRX mechanism;

Wherein, the first receiving terminal is a terminal corresponding to the first destination.
The method according to claim 2, wherein the first indication information is carried in any of the following: a configuration file; capability information.
The method according to claim 1, wherein the first object has nothing to do with the SL DRX mechanism and comprises at least one of the following:

The first object is an object of a first version that does not support the SL DRX mechanism;

The first object is not applicable to SL DRX mechanism.
The method according to claim 1, wherein, where the first operation comprises: determining the first destination as an alternate destination in the SLL LCP process, the method further comprises at least one of the following :

The sending terminal gives up performing the third operation, and the third operation is: determining whether the selected resource belongs to the activation time of the SL DRX corresponding to the first destination;

The sending terminal determines that the first destination is always at an active time.
The method according to claim 1, wherein the first resource includes K resources, the K resources correspond to K transmissions one-to-one, and K is a positive integer.
The method according to claim 1, wherein the U alternative destinations include at least one of the following:

Destination corresponding to at least one MAC CE;

at least some of the destinations corresponding to the logical channels satisfying the preset condition;

The destination corresponding to the logical channel with the highest priority that meets the preset conditions.
The method of claim 1, wherein the first relationship does not match the second relationship, comprising at least one of the following:

The target object selected by the sending terminal has nothing to do with the SL DRX mechanism, and the alternative destinations in the SL LCP process are all related to the SL DRX mechanism;

The target object selected by the sending terminal is related to the SL DRX mechanism, and the alternative destinations in the SL LCP process are not related to the SL DRX mechanism.
The method according to claim 1, wherein said selecting a second resource according to the relationship between the second object and the SL DRX mechanism includes:

When the third condition is met, select the second resource;

Wherein, the third condition includes at least one of the following:

The second resource is within the activation time of SL DRX corresponding to at least one alternative destination;

The first relationship matches the second relationship.
The method of claim 9, wherein the first relationship matches the second relationship, comprising at least one of the following:

The target object selected by the sending terminal has nothing to do with the SL DRX mechanism, and at least one destination in the candidate destinations in the SL LCP process has nothing to do with the SL DRX mechanism;

The target object selected by the sending terminal is related to the SL DRX mechanism, and at least one destination among the candidate destinations in the SL LCP process is related to the SL DRX mechanism.
The method according to claim 1, wherein, before the selection of the second resource, the method further comprises:

The sending terminal obtains SL DRX information corresponding to an alternative destination in the SL LCP process, and the DRX information includes at least SL DRX activation time information.
The method according to any one of claims 1 to 11, wherein the alternative destination includes at least one of the following:

The destination corresponding to the MAC CE;

The destination corresponding to the first logical channel, where the first logical channel includes at least one of the following: a logical channel that satisfies a preset condition; a logical channel that triggers resource selection; and at least some of the logical channels with data.
The method according to any one of claims 1 to 11, wherein the target object comprises at least one of the following: resource pool; SL bandwidth part BWP; SL carrier.
A SL treatment device, comprising:

The first execution module is configured to execute a first operation, and the first operation includes at least one of the following:

When the first object has nothing to do with the SL discontinuous reception DRX mechanism, and the logical channel corresponding to the first destination satisfies the preset condition, determine the first destination as a candidate in the SL logical channel priority LCP process Destination, the first object includes at least one of the following: the service to be sent by the sending terminal; the target object selected by the sending terminal; the first destination;

In the case where the first condition is satisfied, perform a resource reselection operation, the first condition meets at least one of the following: the first resource selected by the sending terminal is in the inactivation time of the SL DRX corresponding to the U alternative destinations In, U is a positive integer; the sending terminal has performed the second operation L times, and the second operation is: selecting the second destination as the final destination in the SL LCP process, and the second destination and the third The destinations corresponding to the objects are different, and the third object is the item with the highest priority among the media access control MAC control unit CE and the logical channel satisfying the preset condition; the first relationship does not match the second relationship, and the second The first relationship is the relationship between the target object selected by the sending terminal and the SL DRX mechanism, and the second relationship is the relationship between the alternative destination in the SL LCP process and the SL DRX mechanism;

Selecting a second resource according to the relationship between the second object and the SL DRX mechanism, where the second object includes at least one of the following: a target object selected by the sending terminal; an alternative destination in the SL LCP process.
The SL processing device according to claim 14, wherein the SL processing device further comprises:

A determining module, configured to determine that the first destination has nothing to do with the SL DRX mechanism when the second condition is met, and the second condition includes at least one of the following:

The sending terminal receives the first indication information sent by the first receiving terminal, and the first indication information indicates that the first destination has nothing to do with the SL DRX mechanism;

The sending terminal fails to perform DRX configuration interaction with the first receiving terminal;

There is no mapping relationship between the identification information of the first destination and the SL DRX mechanism;

Wherein, the first receiving terminal is a terminal corresponding to the first destination.
The SL processing device according to claim 15, wherein the first indication information is carried in any of the following: configuration file; capability information.
The SL processing device according to claim 14, wherein the first object has nothing to do with the SL DRX mechanism, and comprises at least one of the following:

The first object is an object of a first version that does not support the SL DRX mechanism;

The first object is not applicable to SL DRX mechanism.
The SL processing device according to claim 14, wherein, in the case where the first operation comprises: determining the first destination as an alternative destination in an SL LCP process, the SL processing device further comprises a second execution module for at least one of the following:

Give up performing the third operation, the third operation is: determine whether the selected resource belongs to the activation time of the SL DRX corresponding to the first destination;

It is determined that the first destination is always active.
The SL processing device according to claim 14, wherein the first resource includes K resources, and the K resources correspond to K transmissions one-to-one, and K is a positive integer.
The SL processing device according to claim 14, wherein the U alternative destinations include at least one of the following:

Destination corresponding to at least one MAC CE;

at least some of the destinations corresponding to the logical channels satisfying the preset condition;

The destination corresponding to the logical channel with the highest priority that meets the preset conditions.
The SL processing device according to claim 14, wherein the first relationship does not match the second relationship, comprising at least one of the following:

The target object selected by the sending terminal has nothing to do with the SL DRX mechanism, and the alternative destinations in the SL LCP process are all related to the SL DRX mechanism;

The target object selected by the sending terminal is related to the SL DRX mechanism, and the alternative destinations in the SL LCP process are not related to the SL DRX mechanism.
The SL processing device according to claim 14, wherein said selecting the second resource according to the relationship between the second object and the SL DRX mechanism comprises:

When the third condition is met, select the second resource;

Wherein, the third condition includes at least one of the following:

The second resource is within the activation time of SL DRX corresponding to at least one alternative destination;

The first relationship matches the second relationship.
The SL processing device according to claim 22, wherein the first relationship is consistent with the second relationship, comprising at least one of the following:

The target object selected by the sending terminal has nothing to do with the SL DRX mechanism, and at least one destination among the candidate destinations in the SL LCP process has nothing to do with the SL DRX mechanism;

The target object selected by the sending terminal is related to the SL DRX mechanism, and at least one destination among the candidate destinations in the SL LCP process is related to the SL DRX mechanism.
The SL processing device according to claim 14, further comprising:

An acquisition module, configured to acquire SL DRX information corresponding to an alternative destination in the SL LCP process, where the DRX information includes at least activation time information of SL DRX.
The SL processing device according to any one of claims 14 to 24, wherein the alternative destinations include at least one of the following:

The destination corresponding to the MAC CE;

The destination corresponding to the first logical channel, where the first logical channel includes at least one of the following: a logical channel that satisfies a preset condition; a logical channel that triggers resource selection; and at least some of the logical channels with data.
The SL processing device according to any one of claims 14 to 24, wherein the target object includes at least one of the following: resource pool; SL bandwidth part BWP; SL carrier.
A terminal, comprising a processor, a memory, and a program or instruction stored on the memory and operable on the processor, when the program or instruction is executed by the processor, it implements the claims 1 to 13 The step of any one of the described SL processing methods.
A readable storage medium, storing programs or instructions on the readable storage medium, and implementing the steps of the SL processing method according to any one of claims 1 to 13 when the programs or instructions are executed by a processor.
A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the SL processing according to any one of claims 1 to 13 method steps.
A computer program product, the computer program product is stored in a non-transitory storage medium, and when the computer program product is executed by at least one processor, the SL processing according to any one of claims 1 to 13 is realized method steps.
A terminal configured to execute the steps of the SL processing method according to any one of claims 1 to 13.