CN115334694A

CN115334694A - Discontinuous receiving method and device for direct link and user equipment

Info

Publication number: CN115334694A
Application number: CN202110507612.XA
Authority: CN
Inventors: 温小然; 赵锐; 李晨鑫
Original assignee: Datang Gaohong Zhilian Technology Chongqing Co ltd
Current assignee: Datang Gaohong Zhilian Technology Chongqing Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-11-11

Abstract

The invention provides a discontinuous receiving method and device for a direct link and user equipment. The method comprises the following steps: according to the discontinuous reception DRX configuration information and the configuration information of the target resource pool: monitoring in a first time unit within DRX activation time, wherein the first time unit is a time unit in the target resource pool; and/or entering a DRX non-active state in a second time unit in the DRX active time, wherein the second time unit is other time units except the first time unit in the DRX active time. According to the embodiment of the invention, the user equipment can monitor the first time unit within the DRX activation time and/or enter the DRX non-activation state in the second time unit according to the DRX configuration information and the configuration information of the target resource pool, so that effective resources can be accurately monitored, the timely and reliable transmission of services is ensured, and the aim of saving power consumption can be achieved.

Description

Discontinuous receiving method and device for direct link and user equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a discontinuous reception method and apparatus for a direct link, and a user equipment.

Background

In the conventional Discontinuous Reception (DRX) mechanism of the Uu port, a unit of a DRX related timer is ms, that is, absolute time, and a User Equipment (UE) monitors a control channel for a DRX Duration (DRX-On Duration), and when it is detected that scheduling information of the UE includes the DRX related timer, data transmission (uplink) or data Reception (downlink) is completed according to an instruction On the control channel. The UE may configure one or more direct link (SL) resource pools by higher layers. The SL resource pool may be used for transmission of a Physical Sidelink Shared Channel (psch) or for reception of the psch. Because the resource pool configuration of the UE includes time slots with multiple purposes, if data reception is still performed according to the existing resource pool configuration, it cannot be ensured that the DRX activation time includes effective resources that can be used for direct link transmission, which may result in no resource selection for the UE and failure to ensure timely and reliable transmission of services.

Disclosure of Invention

The invention provides a discontinuous receiving method, a discontinuous receiving device and user equipment of a direct link, which are used for solving the problem that the prior DRX operation of a Uu port can not ensure the reliable transmission of the service of the direct link.

The embodiment of the invention provides a discontinuous receiving method of a direct link, which is applied to user equipment and comprises the following steps:

according to the discontinuous reception DRX configuration information and the configuration information of the target resource pool:

monitoring in a first time unit within DRX activation time, wherein the first time unit is a time unit in the target resource pool; and/or

And entering a DRX inactive state in a second time unit within the DRX active time, wherein the second time unit is other time units except the first time unit within the DRX active time.

Optionally, in the DRX inactive state:

receiving no direct link control information and no direct link data information in the second time unit; or

Receiving no direct link control information in the second time unit.

Optionally, the second time unit comprises at least one of:

a reserved time slot within a DRX activation time;

non-uplink time slots within DRX activation time;

synchronization signal slots within DRX active time.

Optionally, the target resource pool is at least one resource pool associated with a service to be sent or received.

Optionally, the method further comprises:

during the DRX inactive time, performing at least one of the following processes:

monitoring control information of a direct link;

a direct link Reference Signal Received Power (SL-RSRP) measurement;

and monitoring the data information of the through link.

Optionally, the monitoring at the first time unit within the DRX activation time includes:

when the number of the first time units included in the monitored duration configured by the DRX configuration information is less than a first value, continuing monitoring after the duration until the number of the monitored first time units is greater than or equal to the first value;

the first value is a numerical value of network configuration, pre-configuration or high-level indication.

and when the starting time of the monitored duration configured by the DRX configuration information does not belong to a first time unit, starting monitoring in the earliest first time unit after the starting time of the duration.

Optionally, the number of the first time units included in the monitored duration in the DRX configuration information is greater than or equal to a second value;

the second value is a numerical value of network configuration, preconfiguration or higher layer indication.

Optionally, the method further comprises at least one of:

determining whether a synchronization signal needs to be received on a synchronization signal time slot within the DRX inactive time;

determining whether a synchronization signal needs to be received on the synchronization signal slot at a second time unit within the DRX activation time.

Optionally, the determining whether the synchronization signal needs to be received on the synchronization signal slot includes at least one of:

under the condition that the user equipment meets a first condition, determining that all the time slots of the synchronous signals do not receive the synchronous signals;

under the condition that the user equipment meets a second condition, determining that the first synchronous signal time slot receives the synchronous signal, and determining that the second synchronous signal time slot does not receive the synchronous signal; the first synchronization signal time slot is a synchronization signal time slot capable of receiving a first synchronization signal, and the second synchronization signal time slot is a synchronization signal time slot incapable of receiving the first synchronization signal; the first synchronization signal is a synchronization signal with a synchronization priority higher than the current synchronization priority of the user equipment;

and under the condition that the user equipment meets the third condition, determining that all the synchronous signal time slots receive the synchronous signals.

Optionally, the first condition comprises at least one of:

the user equipment is synchronized with a Global Navigation Satellite System (GNSS);

the user equipment is synchronized with the base station.

Optionally, the second condition comprises: the user equipment is synchronized with the first target user equipment;

the first target user equipment comprises at least one of:

a user equipment directly synchronized with the GNSS;

user equipment directly synchronized with a base station;

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

Optionally, the third condition comprises at least one of:

the user equipment is synchronized with a second target user equipment;

the user equipment carries out synchronous maintenance;

wherein the second target user equipment comprises at least one of:

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

An embodiment of the present invention provides a user equipment, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

monitoring a first time unit within DRX activation time, wherein the first time unit is a time unit in the target resource pool; and/or

An embodiment of the present invention provides a discontinuous reception apparatus for a direct link, including:

a first processing module, configured to, according to the DRX discontinuous reception configuration information and the configuration information of the target resource pool:

And entering a DRX non-active state in a second time unit within the DRX active time, wherein the second time unit is other time units except the first time unit within the DRX active time.

An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the above-mentioned direct link discontinuous reception method.

The technical scheme of the invention has the beneficial effects that:

according to the embodiment of the invention, the user equipment can monitor the first time unit within the DRX activation time and/or enter the DRX non-activation state in the second time unit according to the DRX configuration information and the configuration information of the target resource pool, so that effective resources can be accurately monitored, the timely and reliable transmission of services is ensured, and the aim of saving power consumption can be achieved.

Drawings

Figure 1 shows a basic principle diagram of DRX;

fig. 2 is a flowchart of a direct link discontinuous reception method according to an embodiment of the present invention;

figure 3 shows one of the DRX diagrams of the embodiments of the present invention;

FIG. 4 is a second diagram of DRX in accordance with an embodiment of the present invention;

FIG. 5 is a third exemplary DRX diagram in accordance with an embodiment of the present invention;

FIG. 6 shows a fourth exemplary DRX configuration in accordance with the invention;

FIG. 7 shows a fifth exemplary DRX configuration in accordance with an embodiment of the present invention;

FIG. 8 shows a sixth exemplary DRX diagram in accordance with the present invention;

fig. 9 is a schematic structural diagram of a through-link discontinuous reception apparatus according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In addition, the terms "system" and "network" are often used interchangeably herein.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

In the embodiment of the present invention, the term "and/or" describes an association relationship of an associated object, and indicates that three relationships may exist, for example, a and/or B, and may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In making the description of the embodiments of the present invention, some concepts used in the following description will first be explained.

1. DRX:

in a mobile communication system based on a shared channel, for example, in Long Term Evolution (LTE), transmission of uplink and downlink data is controlled by a base station (eNB) scheduler, and when the scheduler determines to schedule a user, the scheduler notifies a terminal of what resource to transmit or receive data on via a control channel. And the UE monitors the control channel, and when the UE detects that the scheduling information contains the scheduling information of the UE, the UE completes the transmission (uplink) or the reception (downlink) of the data according to the indication on the control channel. In the active state, since the UE does not determine when the eNB schedules it, a common working mode is that the UE continuously monitors the control channel and parses each subframe containing its downlink scheduling control channel to determine whether it is scheduled. The working mode can obtain higher efficiency under the condition that the UE has larger data volume and is likely to be frequently scheduled. However, for some services, the frequency of arrival of data is low, resulting in a small number of times the UE is scheduled, which increases its power consumption if the UE is still continuously listening to the control channel. In order to solve the problem of power consumption, the LTE system adopts a DRX operating mode, and in this operating mode, the UE periodically monitors the control channel, thereby achieving the purpose of power saving.

DRX rationale:

the basic principle of DRX is that, as shown in fig. 1, a UE should monitor a PDCCH (UE short monitor PDCCH) during a DRX Cycle (Cycle). Wherein, the Duration (On Duration) represents the time period of UE monitoring the control channel, during which, the radio frequency channel is opened and the control channel is monitored continuously; at other times (e.g., other than On duration for DRX), the UE is in Sleep (Sleep) state, and its radio link is turned off and no longer monitors the control channel, so as to save power. The On Duration occurs periodically, and the specific period is realized by eNB configuration.

The DRX mechanism of cellular networks takes into account the arrival model of data traffic, i.e. the arrival of data packets is bursty. In order to adapt to the service arrival characteristics, the LTE DRX procedure employs multiple timers and is combined with a Hybrid automatic repeat request (HARQ) procedure to achieve better power saving performance.

DRX-related timer:

(1) DRX duration timer (DRX-On duration timer): the time the UE wakes up periodically to listen to the control channel is shown in fig. 1.

(2) Short DRX cycle Timer (Short DRX cycle Timer): for better matching with the data traffic arrival characteristics, the cellular network communication system supports the configuration of two DRX cycles: long cycles and short cycles. The On Duration Timer is the same for both periods, but the sleep time is different. In the short cycle, the sleep time is relatively shorter, and the UE can listen to the control channel again faster. The long cycle is mandatory to configure and is the initial state of the DRX procedure; the short cycle is optional. The Short DRX cycle Timer sets the time for which the Short cycle duration is to be used. After the Short DRX cycle Timer times out, the UE will use the Long cycle.

(3) DRX Inactivity Timer (DRX-Inactivity Timer): after the DRX is configured, the UE starts the timer when it receives the control signaling for HARQ initial transmission within a Time allowed to monitor the control channel (i.e. Active Time), and the UE continuously monitors the control channel before the timer times out. If the UE receives the control signaling of the HARQ initial transmission before the drx-Inactivity Timer is overtime, the drx-Inactivity Timer is terminated and restarted.

(4) HARQ Round-Trip Time (RTT) Timer (HARQ RTT Timer): the method is divided into drx-HARQ-RTT-Timer DL (Downlink) and drx-HARQ-RTT-Timer UL (Uplink), and aims to enable the UE not to monitor a control channel before next retransmission, so that a better power saving effect is achieved. In the following behavior example, the first symbol after the transmission of the Physical Uplink Control Channel (PUCCH) of the UE-related process is started, and the timer is turned on. If the data in the corresponding HARQ process is not successfully decoded after the previous HARQ transmission (the UE feeds back a negative acknowledgement NACK), after DL HARQ RTT Timer is overtime, the UE opens a DRX downlink Retransmission Timer (DRX-Retransmission Timer DL). If the data in the corresponding HARQ process is decoded successfully after the previous HARQ transmission (the UE feeds back a positive acknowledgement ACK), after the expiration of the drx-HARQ-RTT-Timer DL Timer, the UE does not start drx-Retransmission Timer DL. If only drx-HARQ-RTT-Timer DL is currently running, the UE does not monitor the control channel.

(5) HARQ retransmission Timer (HARQ retransmission Timer): and are classified into a drx-Retransmission Timer DL and a drx-Retransmission Timer UL. In the following behavior example, during the operation of the DL HARQ retransmission Timer, the UE monitors the control signaling and waits for the retransmission scheduling of the corresponding HARQ process.

Active time definition under DRX:

in the On Duration Timer, HARQ retransmission Timer, and Inactivity Timer, any one of the timers is running and the UE will monitor the control channel. The Time when the UE listens to the control channel is also called Active Time. In the LTE system, active Time is affected by other factors besides DRX timer, and Active Time for a UE is defined to include the following Time:

a time during which a drx-On Duration Timer or drx-Inactivity Timer or drx-Retransmission Timer DL or drx-Retransmission Timer UL or a ra-Contention Resolution Timer (ra-Contention Resolution Timer) operates;

after the UE sends an uplink Scheduling Request (SR), waiting for a time for the base station to send a Physical Downlink Control Channel (PDCCH);

after receiving a Random Access Response (RAR), the non-contention Random Access UE waits for a time of a PDCCH scheduled by a Cell Radio Network Temporary Identifier (C-RNTI).

On Duration calculation under Common (Common) DRX:

for short DRX cycles, the On Duration calculation is as follows:

[(SFN*10)+subframe number]modulo(Short DRX Cycle)

＝(Drx Start Offset)modulo(Short DRX Cycle)

for long DRX cycle, the On Duration calculation formula is as follows:

[(SFN*10)+subframe number]modulo(Long DRX Cycle)

＝Drx Start Offset

wherein:

system Frame Number (SFN): numbering SFN of the current wireless frame;

subframe number: the number of the current subframe;

short DRX Cycle: a short DRX cycle;

long DRX Cycle: a long DRX period;

drx Start Offset: an offset value of Radio Resource Control (RRC) signaling configuration.

2. Silelink resource pool

The UE may be configured with one or more SL resource pools by higher layers. The SL resource pool may be used for transmission of a Physical Sidelink Shared Channel (psch) or for reception of the psch.

The set of slots (slots) that may belong to a PSSCH resource pool in the time domain may be denoted as

Wherein

The slot index is related to slot #0 of the radio frame, corresponding to the system frame number SFN0 or DFN0 of the serving cell, and excluding the following three slots from all physical slots in the time domain (slots determined by the radio frame) leads to logical slots belonging to the set:

1)：N _{S_SSB} : for transmitting a direct Link Synchronization Signal (SLSS)/Physical direct Link broadcast channel (Physical direct Link Broa)dcast Channel, PSBCH);

2)：N _nonSL when a non-uplink Time slot and a Uu port share a Time Division multiplexing (TDD) carrier, at least one of slots which are not uplink Symbols is arranged in an Orthogonal Frequency Division Multiplexing (OFDM) Symbol from the Y th to the Y + X-1 th, and Y and X are configured by high-layer parameters sl-Start Symbols and sl-Length Symbols.

3): reserving slots: for exclusion of N _{S_SSB} And N _nonSL In ascending order

According to bitmap (bitmap) mapping, the number of slots which cannot be evenly divided by bitmap in the residual slots is the number of reserved slots, namely the number of reserved slots

L _bitmap The bitmap length indicated for the higher layer.

Will reserve slots l according to the following formula _r Evenly distributed into the SFN. Wherein m =0,1, …, N _reserved -1。

In the logic slots excluding the three slots, the UE determines a set of slots allocated to a resource pool according to the following steps:

1) Using means associated with resource pools

L _bitmap The bitmap length indicated for the higher layers.

2) If b is _k′ =1, then

The logical slot belonging to the set, i.e. the resource is available to the resource pool, is a logical slot in the resource pool, where k' = k mod L _bitmap 。

3) Re-indexing the logical slots within the resource pool so that the remaining

Is a continuous {0,1, …, T' _max -1}, wherein T' _max Are the remaining slots in the set, i.e., the slots in the resource pool that are available for sidelink transmission.

The μ is a conversion parameter, that is, a parameter for converting the time length into the number of time slots, which is uniquely determined by a Sub Carrier Space (SCS) of the resource pool, and it can be specifically seen in table 1 below:

table 1:

wherein, the relation between the subcarrier spacing delta f and mu is as follows: Δ f =2 ^u *15[KHz]。

The SL Resource pool frequency domain is composed of "numSubchannel" continuous subchannels, each subchannel is composed of "subchannel" continuous Physical Resource Blocks (PRBs), and the "numSubchannel" and "subchannel" are parameters configured by a higher layer.

Specifically, embodiments of the present invention provide a discontinuous reception method and apparatus for a direct link, and user equipment, so as to solve a problem that a DRX operation of an existing Uu port cannot ensure reliable service transmission of the direct link.

As shown in fig. 2, an embodiment of the present invention provides a discontinuous reception method for a direct link, which is applied to a user equipment, and includes:

step 21, according to the discontinuous reception DRX configuration information and the configuration information of the target resource pool:

In this embodiment, the UE may be a device configured with DRX parameters (i.e., a receiving UE), and before performing the above steps, the UE may obtain the DRX configuration information and the configuration information of the target resource pool, respectively. The DRX configuration may be one or more sets of DRX parameters, each set of DRX parameters at least includes a time period (e.g., a DRX-On Duration Timer running period) for the ue to monitor sidelink and/or a DRX Cycle (e.g., DRX-Cycle), and each set of DRX parameters corresponds to a sidelink service.

Wherein, the DRX configuration information may be: the network side equipment configures one or more groups of DRX parameters for the user equipment according to the service expected to be received by the user equipment; or

A sending UE of the opposite end of the user equipment configures one or more groups of DRX parameters for the user equipment according to the service to be transmitted to the user equipment; or

And the user equipment configures one or more groups of DRX parameters autonomously according to the expected received service of the user equipment, and informs the autonomously configured DRX parameters to network side equipment or the sending UE.

The configuration information of the target resource pool may be information of one or more resource pools configured for the user equipment by a higher layer of the user equipment. Taking the configuration information of the target resource pool configured at a high level as an example, the configuration information of a plurality of resource pools can be configured, wherein the configuration information of the target resource pool is included, that is, each resource pool corresponds to a set of resource pool configuration information. Specifically, the configuration information of the resource pool may include: the distribution of the time slot for the synchronization signal (i.e. the synchronization signal time slot), the time slot for the non-uplink transmission (i.e. the non-uplink time slot), the reserved time slot, the time slot with the bitmap value of 0, and the time slot with the bitmap value of 1 in the resource pool.

After the user equipment acquires the DRX configuration information and the configuration information of the target resource pool, the user equipment can perform related operation of periodic monitoring and/or power saving according to the DRX configuration information and the configuration information of the target resource pool.

As an optional embodiment, specifically, the ue monitors a first time unit within a DRX activation time according to the DRX configuration information and the configuration information of the target resource pool, where the first time unit is a time unit in the target resource pool. The first time unit may be: the first time unit is an effective resource for sidelink transmission. Taking the first time unit as the logical time slot of the target resource pool as an example, that is, the ue monitors the logical time slot in the target resource pool within the DRX activation time. The logical time slot is the time slot with the bitmap value of 1 in the target resource pool, namely after the synchronous signal time slot, the non-uplink time slot and the reserved time slot are eliminated, the rest time slots are periodically and repeatedly configured according to a preset period, and the bitmap value in each period is configured to be the time slot of 1.

The monitoring by the ue in the first time unit may include monitoring a Physical downlink Control Channel (PSCCH) and a PSCCH and/or decoding a downlink Control Information (SCI) in the first time unit. The SCI includes a first stage SCI (1 st-stage SCI) carried by PSCCH and a second stage SCI (2 nd-stage SCI) carried by PSSCH. The DRX active time (DRX active time) refers to: the time period required to monitor determined by the ue according to the DRX configuration information may include a DRX-On Duration Timer, a DRX-Inactivity Timer, or a DRX-Retransmission Timer running period.

In this embodiment, the ue monitors in the first time unit within the DRX activation time, that is, the monitoring of PSCCH and/or decoding of SCI in an invalid time slot (e.g., a synchronization signal time slot, a non-uplink time slot, a reserved time slot, and a time slot with a bitmap value of 0) in the resource pool can be skipped, so that the ue can accurately monitor the valid resources while saving power consumption, thereby ensuring timely and reliable transmission of services.

As another optional embodiment, specifically, the ue may enter a DRX inactive state at a second time unit within a DRX active time according to the DRX configuration information and the configuration information of the target resource pool. The DRX inactive state may be: receiving no direct link control information and no direct link data information in the second time unit; or, the second time unit does not receive the direct link control information. In the DRX inactive state, if the ue does not need to perform channel monitoring for other purposes besides sidelink data monitoring, the ue may enter a power saving mode. The second time unit is other time units except the first time unit in the DRX active time, that is, the ue may enter a DRX inactive state in a time unit when sidelink data monitoring is invalid, so as to save power consumption.

Optionally, in the DRX inactive state: receiving no direct link control information and no direct link data information in the second time unit; or, the second time unit does not receive the direct link control information. That is, within the DRX active time configured by the DRX configuration information, if the ue enters the DRX inactive state, the PSCCH and PSCCH are not monitored in the second time unit, which may specifically include: the sidelink control information is not received, or the sidelink control information and the data information are not received.

In this embodiment, the ue may select a second time unit within the DRX active time to enter a DRX inactive state according to its own power saving requirement, that is, the second time unit does not receive the direct link control information and the direct link data information; or, the receiving of the direct link control information is not performed in the second time unit, for example, the monitoring of PSCCH and/or the decoding of SCI is not performed in the second time unit. In the DRX inactive state, if the user equipment does not need to monitor for other purposes than data reception on the target resource pool for the second time unit, then a power saving mode may be entered. In particular, the listening for other purposes may include, for example, listening for a synchronization signal, listening for a downlink channel, and the like.

The second time unit is other time units except the first time unit in the DRX activation time. In particular, the second time unit may comprise at least one of:

a reserved time slot within a DRX activation time;

non-uplink time slot within DRX activation time;

synchronization signal slots within DRX active time.

Specifically, the target resource pool may be at least one resource pool associated with a service to be sent or received. Further, the target resource pool includes one of:

when only one receiving resource pool is configured for the user equipment in the high layer, the target resource pool is the receiving resource pool;

configuring at least two receiving resource pools for the user equipment at a high level (namely the user equipment can acquire configuration information of the at least two receiving resource pools), wherein when one receiving resource pool is associated with a service to be sent or received, the target resource pool is the receiving resource pool associated with the service to be sent or received;

at least two receiving resource pools are configured for the user equipment at a high level, and when at least two receiving resource pools exist in the at least two receiving resource pools and are associated with a service to be sent or received, the target resource pool can be any one of the receiving resource pools associated with the service to be sent or received. That is, the ue may monitor in the first time unit of any receiving resource pool associated with the service to be sent or received.

The receiving resource pool associated with the service to be sent or received may be a receiving resource pool with service transmission.

Optionally, the method further comprises: during the DRX inactive time, performing at least one of the following processes:

monitoring control information of a direct link;

a direct link reference signal received power (SL-RSRP) measurement;

and monitoring the data information of the through link.

In this embodiment, the DRX inactive time (DRX inactive time) is a time period that the ue determines according to the DRX configuration information and does not need to monitor, for example, neither DRX-On Duration Timer nor DRX-Inactivity Timer is running. During the DRX inactivity time, the ue does not monitor for sidelink data reception on the resource pool, regardless of whether the time unit corresponds to the first time unit in the target resource pool. But the user equipment can perform receiving processing triggered by other behaviors in the DRX inactivity time, including at least one of the following:

direct link control information listening, for example: PSCCH monitoring triggered aiming at resource perception;

SL-RSRP measurements, for example: SL-RSRP measurements for resource-aware triggering;

direct link data information listening, for example: PSSCH listening triggered for data reception.

As an optional embodiment, the monitoring in the first time unit within the DRX activation time includes:

when the number of the first time units included in the monitored Duration (On Duration) configured by the DRX configuration information is less than a first value, continuing monitoring after the Duration until the number of the monitored first time units is greater than or equal to the first value; the first value is a numerical value of network configuration, pre-configuration or high-level indication.

In this embodiment, the DRX configuration information includes an On Duration monitored by the ue, the user monitors in a first time unit in the On Duration, and when the number of the first time units included in the On Duration is smaller than a first value (e.g., only one or 0 first time units are included), in order to ensure that sufficient effective resources can be monitored in the DRX activation time, the monitoring may be continued after the On Duration until a sufficient number of the first time units are monitored. The first value may be a value configured, preconfigured or indicated by a higher layer of the network device, may be a target value set according to a monitoring requirement, and may also be a minimum value for monitoring the first time unit within the DRX activation time.

It should be noted that an additional time beyond the On Duration may be configured, preconfigured or indicated by the network at a higher layer, for continuing to listen to the first time unit, that is, when the number of the first time units that the ue listens to in the On Duration is smaller than the first value, the ue continues to listen to the first time unit for the additional time, so as to ensure that enough effective resources are listened to.

The following describes a specific implementation procedure of the ue performing monitoring and/or power saving (e.g. entering into DRX inactive state) according to the DRX configuration information and the configuration information of the target resource pool by way of example.

Example one: and taking DRX parameter granularity as a physical time slot and the user equipment as receiving UE as an example, and realizing the discontinuous receiving process of the user equipment.

The granularity of the DRX parameters is physical slots, i.e.: DRX related timers (e.g., DRX-On Duration Timer, DRX-Retransmission Timer, DRX-cycle, etc.) are all counted in physical slots (all slots in the resource pool), without distinguishing whether a resource in the resource pool is available.

Taking the example of only configuring a single resource pool for the receiving UE, the target resource pool is the configured single resource pool, and the receiving UE monitors PSCCH and/or decodes SCI On slots corresponding to resource pool bitmap 1 within DRX active time (e.g., during DRX-On Duration Timer, DRX-Inactivity Timer or DRX-Retransmission Timer operation). And because the data packet will not be received on the slots with the bitmap not being 1 in the resource pool, the receiving UE can select the slots corresponding to the resource pool with the bitmap not being 1 in the DRX active time according to the power saving requirement of the receiving UE, that is, the receiving UE enters the DRX inactive state on the synchronization signal time slot, the non-uplink time slot, the reserved time slot and the time slot with the bitmap value being 0 in the resource pool, for example, the monitoring of PSCCH and/or the decoding of SCI are not performed, thereby further achieving the purpose of power saving.

When the DRX parameter granularity is physical slots, the receiving UE performs DRX as shown in fig. 3.

The receiving UE continues to monitor PSCCH and PSSCH and/or decode SCI in the On Duration (i.e., DRX-On Duration Timer running period), but because the On Duration includes a non-uplink timeslot (non-SL) and a timeslot with a bitmap value of 0, the receiving UE will not monitor data information in the current resource pool in the above timeslot, and therefore, the receiving UE selects not to monitor PSCCH and PSSCH and/or decode SCI in the above timeslot in the On Duration, i.e., enters a DRX inactive state. Specifically, as shown in fig. 3, the receiving UE may enter a sleep state in the non-SL slot and the slot with a bitmap value of 0 in the On duration.

Since the granularity of the DRX parameters is physical slots, the actual On duration (bitmap value is 1) is only 1 slot, and the available information is limited, the receiving UE can choose to start monitoring an additional On duration (i.e., additional On duration) On the next slot with bitmap value of 1, thereby ensuring that enough useful information is obtained. The UE at the two transmitting and receiving ends needs to keep consistent additional On duration, and the value of the additional On duration may be:

receiving a preconfigured value that the UE acquires while acquiring the DRX configuration.

Or the following steps:

additional On duration = drx-On duration Timer-On duration actual listening time.

The On duration allocation method described above can be used for both a dr x-Inactivity Timer and a dr x-Retransmission Timer.

As shown in fig. 3, the drx-Retransmission Timer is 2slots, the receiving UE continues to monitor the PSCCH and/or decode the SCI during drx-Retransmission Timer operation, and the drx-Retransmission Timer operation includes a reserved time slot (reserve) in which the receiving UE will not monitor useful information, so that the receiving UE may enter the power saving mode (specifically, the receiving UE may enter the sleep) in advance after monitoring of 1 slot is completed.

As an optional embodiment, the monitoring in the first time unit within the DRX active time includes: when the starting time of the monitored Duration (On Duration) configured by the DRX configuration information does not belong to a first time unit, starting monitoring in the first time unit which is the earliest after the starting time of the Duration.

In this embodiment, if the start time of the On Duration is not the first time unit, that is, the valid resource cannot be monitored at the start time or within a certain period of time, in order to ensure that enough valid resource is monitored, monitoring may be performed in a first time unit that appears after the start time of the On Duration, or the start time may be delayed to the appearance time of the first time unit.

The following describes a specific implementation process of the ue monitoring and/or entering the DRX inactive state according to the DRX configuration information and the configuration information of the target resource pool by way of example.

Example two: and taking DRX parameter granularity as a physical time slot and the user equipment as receiving UE as an example, and realizing the discontinuous receiving process of the user equipment.

As shown in fig. 4, the receiving UE should continue to monitor PSCCH and/or decode SCI in the On Duration, but because the On Duration only includes a non-uplink timeslot (non-SL) and a timeslot with a bitmap value of 0, and does not include any valid timeslot with a bitmap value of 1, the receiving UE will not monitor data information in the current resource pool in the above timeslot, and therefore, the receiving UE chooses not to monitor PSCCH and/or decode SCI in the above timeslot, i.e., enters a DRX inactive state. Specifically, as shown in fig. 4, the receiving UE may enter a sleep state in the non-SL slot and the slot with a bitmap value of 0 in the On duration.

To obtain enough useful information, the receiving UE may choose to defer (posttone) the On Duration until listening to the sidelink channel is resumed at the next slot with a bitmap value of 1.

As shown in fig. 4, the DRX-Retransmission Timer is 2slots, the receiving UE continues to monitor the PSCCH and/or decode the SCI during the DRX-Retransmission Timer operation period, the DRX-Retransmission Timer operation period includes a reserved time slot (reserve), and the receiving UE will not monitor useful information in the time slot, so the receiving UE may advance to the DRX inactivity time (specifically, the receiving UE may enter the slot) after completing monitoring of 1 slot.

As an optional embodiment, the number of the first time unit included in the On Duration (On Duration) monitored in the DRX configuration information is greater than or equal to a second value; the second value is a numerical value of network configuration, preconfiguration or higher layer indication.

In this embodiment, the network side device may configure or pre-configure or indicate at a higher layer: the number of first time units required to be included in the On Duration in the DRX configuration information may be a minimum number of first time units required to be included in the On Duration, for example: the network side or the high layer may indicate that at least the first time unit quantity in the target resource pool needs to be included in the On Duration is N, and when configuring the DRX configuration information, the On Duration with the physical time slot or the logical time slot as the granularity is set On the basis of meeting N, thereby ensuring that the ue monitors enough effective resources within the DRX activation time.

Example three: and taking DRX parameter granularity as a physical time slot and the user equipment as receiving UE as an example, and realizing the discontinuous receiving process of the user equipment.

Assuming that the On Duration of the receiving UE needs to include at least 3 available effective resources in the resource pool according to the network side or the high layer indication, the On Duration with the physical slots as the granularity is set to 6slots in consideration of the resource pool including the non-uplink slot (non-SL), the reserved slot (reserve), and the slot with the bitmap value of 0, as shown in fig. 5.

As shown in fig. 5, the receiving UE continues to monitor PSCCH and/or decode SCI during the drx-Retransmission Timer operation period, which includes a synchronization signal time slot (SLSS), and the receiving UE will not monitor data information in the current resource pool in the time slot, so that there is no need to monitor PSCCH and/or decode SCI, but cannot enter the power saving mode in the time slot because the receiving UE is configured to monitor a synchronization signal in the time slot.

In the embodiment of the present invention, in order to achieve the purpose of saving power consumption, the ue may enter a DRX inactive state in a synchronization signal timeslot, where the synchronization signal timeslot is: n is a radical of _{S_SSB} The time slots of the SLSS are configured, or the slots (i.e., S-SSBs) of the PSBCH block are configured. To avoid affecting the reception of the synchronization signals on the synchronization signal slots, the power saving mode may be entered at synchronization signal slots where no synchronization signals need to be received, which may include SLSS, PSBCH. The user equipment needs to determine whether the synchronization signal slot needs to receive the synchronization signal.

In particular, the method further comprises at least one of:

Further, the determining whether the synchronization signal needs to be received on the synchronization signal slot may include at least one of:

a) And under the condition that the user equipment meets the first condition, determining that all the synchronous signal time slots do not receive synchronous signals. The first condition may include at least one of: synchronizing the user equipment with a Global Navigation Satellite System (GNSS); the user equipment is synchronized with a base station (gNB/eNB).

b) Under the condition that the user equipment meets a second condition, determining that the first synchronous signal time slot receives the synchronous signal, and determining that the second synchronous signal time slot does not receive the synchronous signal; the first synchronous signal time slot is a synchronous signal time slot capable of receiving a first synchronous signal, and the second synchronous signal time slot is a synchronous signal time slot incapable of receiving the first synchronous signal; the first synchronization signal is a synchronization signal having a higher synchronization priority than a current synchronization priority of the user equipment itself.

The second condition may include: the user equipment is synchronized with the first target user equipment;

the first target user equipment comprises at least one of:

a user equipment directly synchronized with the GNSS;

a user equipment directly synchronized with a base station;

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

In this case, the ue may receive the synchronization signal according to a larger synchronization signal reception time interval, that is: the user equipment may perform a reception of the synchronization signal once every one or more synchronization signal slots, and the remaining synchronization signal slots do not perform a reception.

c) And under the condition that the user equipment meets the third condition, determining that all the synchronous signal time slots receive the synchronous signals.

The third condition may include at least one of:

the user equipment is synchronized with a second target user equipment;

the user equipment carries out synchronous maintenance;

wherein the second target user equipment comprises at least one of:

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

In this case, the ue may perform synchronization signal reception according to a synchronization signal reception time interval (160 ms) agreed by a protocol, that is, the ue performs synchronization signal reception in each synchronization signal slot.

With the above-described embodiment, the synchronization priority of the user terminal needs to be considered when determining whether the synchronization signal slot receives the synchronization signal. For a Sidelink UE, the synchronization source may include: the GNSS, the gNB/eNB, and the other user equipments, according to the configured or preconfigured synchronization information, the user equipment needs to process according to a synchronization priority, where the synchronization priority is in the following 2 cases:

1) A GNSS-based synchronization priority;

when the configuration information or the pre-configuration information indicates that the synchronization based on the GNSS is higher than the synchronization priority based on the gNB/eNB, the synchronization priority can be set to be from high to low in sequence:

P0:GNSS；

p1, UE directly synchronizes to GNSS (UE direct synchronized to GNSS);

UE indirectly synchronizes to GNSS (UE induced synchronized to GNSS);

P3:gNB/eNB

UE directly synchronizes to gNB/eNB (UE direct synchronized to gNB/eNB);

UE indirectly synchronizes to gNB/eNB (UE induced synchronized to gNB/eNB);

p6: the remaining UEs have the lowest priority (the remaining UEs have the lowest priority).

2) Synchronization priority based on gNB/eNB;

when the user equipment is configured to have higher gNB/eNB-based synchronization than GNSS-based synchronization, the synchronization priority is in order from high to low:

P0’:gNB/eNB；

p1' UE synchronizes directly to gNB/eNB (UE direct synchronized to gNB/eNB);

p2' that the UE is indirectly synchronized to the gNB/eNB (UE induced synchronized to gNB/eNB);

P3’:GNSS；

p4' UE direct synchronized to GNSS (UE direct synchronized to GNSS);

p5' UE indirectly synchronizes to GNSS (UE induced synchronized to GNSS);

p6' the remaining UEs have the lowest priority (the remaining UEs have the lowerst priority).

The user equipment may determine whether the synchronization signal slot is to receive the synchronization signal based on the synchronization priority. In the period of monitoring the synchronization signal time slot, the synchronization signals on all the synchronization signal time slots can be monitored, and the synchronization signal time slot which can obtain the synchronization signal with the priority higher than the self priority can also be monitored.

It should be noted that, the granularity of the DRX parameter in the DRX configuration information in the embodiment of the present invention may be a physical timeslot or a logical timeslot.

The following describes a specific implementation process of the direct link discontinuous reception method when DRX parameter granularity is used as a logical timeslot.

In example four, the granularity of the DRX parameter is logical slots, that is, the DRX related timers (e.g., DRX-On Duration Timer, DRX-Retransmission Timer, DRX-cycle, etc.) are all counted by logical slots (excluding the slots of the synchronization signal, the non-uplink slot, and the remaining slots in the resource pool after the reserved slot), and it is not distinguished whether the bitmap mapping value of the logical slots is 0 or 1.

As shown in fig. 6, taking the UE as a receiving UE, the receiving UE continues to monitor PSCCH and/or decode SCI in the On duration, but since the On duration includes a reserved slot (reserve), a non-uplink slot (non-SL), and a slot with a bitmap value of 0, the receiving UE will not monitor data information in the resource pool in the three slots, and therefore, the receiving UE selects that the three slots do not monitor PSCCH and/or decode SCI in the On duration, that is, enters a DRX inactive state. Specifically, as shown in fig. 6, the receiving UE may enter sleep at a reserve slot, a non-SL slot, and a slot with a bitmap value of 0 in the On duration.

Because the granularity of the DRX parameter is logical slots, although the preset time of the On duration is 3 slots, the actual monitoring time is only the slots with the bitmap value of 1 in the resource pool, namely 2 slots. For the timeslot with bitmap of 0, although the On duration is counted, the listening is not performed because the timeslot is not an effective resource in the resource pool. And because the On duration contains the reserved time slot and the non-uplink time slot, the On duration actually contains 5 physical slots.

As shown in fig. 6, the receiving UE continues to monitor the PSCCH and/or decode the SCI during the drx-Retransmission Timer operation, and since the drx-Retransmission Timer operation includes a synchronization signal time slot (SLSS), the receiving UE will not monitor data information in the current resource pool in the time slot, and thus does not need to monitor the PSCCH and/or decode the SCI, and since the receiving UE is configured to not need to monitor a synchronization signal in the time slot, the receiving UE may enter a power saving mode (sleep) in the time slot. Since one synchronization signal slot is included, the drx-Retransmission Timer has a length of 2slots, but actually includes 3 physical slots.

In example five, the granularity of the DRX parameter is that the logical slots in the resource pool are, that is, the DRX related timers (e.g., DRX-On Duration Timer, DRX-Retransmission Timer, DRX-cycle, etc.) are all counted by the logical slots belonging to the resource pool (the slots whose bitmap value is 1 in the remaining slots in the resource pool after excluding the synchronization signal slot, the non-uplink slot, and the reserved slot). In this case, different resource pools will maintain different DRX configurations.

As shown in fig. 7, the receiving UE continues to monitor PSCCH and/or decode SCI in the On duration, but since the On duration includes a reserved slot (reserve), a non-uplink slot (non-SL), and a slot with a bitmap value of 0, the receiving UE will not monitor useful information in the three slots, and therefore, the receiving UE selects that the three slots do not monitor PSCCH and/or decode SCI in the On duration, that is, enters into a DRX inactive state. Specifically, as shown in fig. 7, the receiving UE may enter sleep at a reserve slot, a non-SL slot, and a slot with a bitmap value of 0 in the On duration.

Because the granularity of the DRX parameter is logical slots in the resource pool, the actual monitoring time of the On duration is the preset time, that is, 3 slots, but the On duration actually includes 6 physical slots because of the three slots.

As shown in fig. 7, the receiving UE continues to monitor PSCCH and/or decode SCI during the drx-Retransmission Timer operation, and since the drx-Retransmission Timer operation includes a synchronization signal time slot (SLSS), the receiving UE will not monitor data information in the current resource pool in the time slot, so that there is no need to monitor PSCCH and/or decode SCI, and since the receiving UE is configured to not need to monitor a synchronization signal in the time slot, it can enter a power saving mode (sleep) in the time slot. And since one synchronization signal slot is included, although the length of the drx-Retransmission Timer is 2slots, 3 physical slots are actually included.

The following describes a specific implementation process of the direct link discontinuous reception method when DRX parameter granularity is used as a physical timeslot.

And if the user equipment configures a plurality of resource pools associated with services to be sent or received, taking the resource pools associated with the services to be sent or received as the resource pools with service transmission as an example, for the plurality of resource pools with service transmission, for a time slot with a bitmap value of 0, and for any time slot with a bitmap value of 0, no uplink or downlink data transmission/reception exists on the time slot.

As shown in fig. 8, the DRX parameter granularity is taken as physical slots as an example. In the On duration, for any one of the resource pool 1 and the resource pool 2 as the logical slots in the resource pool (the bitmap value On any one resource pool is 1), the receiving UE needs to keep waking up. For a logical slot (bitmap value 0) that is neither in resource pool 1 or resource pool 2, e.g., the second slot of the DRX-Retransmission Timer, the receiving UE may enter the DRX inactive state (specifically, the receiving UE may enter the slot at the second slot of the DRX-Retransmission Timer).

According to the embodiment of the invention, the UE can monitor in the first time unit within the DRX activation time according to the DRX configuration information and the configuration information of the target resource pool, and/or enter the DRX non-activation state in the second time unit, so that the UE does not monitor invalid resources (namely, resources which are not used for data transmission by the sending UE) in the resource pool, the UE can further optimize the power saving performance on the basis of ensuring the reliable receiving of the service, the power consumption of the UE is reduced, and the UE is more suitable for the discontinuous receiving of sidelink UE with the power saving requirement.

The above embodiments describe the discontinuous receiving method of the direct link according to the present invention, and the following embodiments further describe corresponding apparatuses with reference to the accompanying drawings.

Specifically, as shown in fig. 9, an embodiment of the present invention provides a direct-link discontinuous reception apparatus 900, including:

a first processing module 910, configured to, according to the DRX discontinuous reception configuration information and the configuration information of the target resource pool:

Optionally, in the DRX inactive state:

And not receiving the through link control information in the second time unit.

Optionally, the second time unit comprises at least one of:

a reserved time slot within a DRX activation time;

non-uplink time slots within DRX activation time;

synchronization signal slots within DRX active time.

Optionally, the apparatus further comprises:

a second processing module, configured to perform at least one of the following processes during the DRX inactivity time:

monitoring control information of a direct link;

a direct link reference signal received power (SL-RSRP) measurement;

and monitoring the data information of the through link.

Optionally, the first processing module 910 includes:

a first monitoring unit, configured to, when the number of the first time units included in the monitored duration configured by the DRX configuration information is smaller than a first value, continue monitoring after the duration until the number of the monitored first time units is greater than or equal to the first value;

the first value is a numerical value of network configuration, preconfiguration or high-level indication.

Optionally, the first processing module 910 includes:

and the second monitoring unit is used for starting monitoring in the first time unit which is the earliest after the starting time of the duration time when the starting time of the duration time configured by the DRX configuration information does not belong to the first time unit.

Optionally, the apparatus further comprises a determining module configured to perform at least one of:

Optionally, the determining means comprises at least one of:

a first determining unit, configured to determine that all synchronization signal timeslots do not receive a synchronization signal when the ue meets a first condition;

a second determining unit, configured to determine that the first synchronization signal slot receives the synchronization signal and the second synchronization signal slot does not receive the synchronization signal when the ue meets a second condition; the first synchronous signal time slot is a synchronous signal time slot capable of receiving a first synchronous signal, and the second synchronous signal time slot is a synchronous signal time slot incapable of receiving the first synchronous signal; the first synchronization signal is a synchronization signal with a synchronization priority higher than the current synchronization priority of the user equipment;

and a third determining unit, configured to determine that all the synchronization signal slots receive the synchronization signal when the user equipment satisfies a third condition.

Optionally, the first condition comprises at least one of:

synchronizing the user equipment with a Global Navigation Satellite System (GNSS);

the user equipment is synchronized with the base station.

the first target user equipment comprises at least one of:

a user equipment directly synchronized with the GNSS;

user equipment directly synchronized with a base station;

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

Optionally, the third condition comprises at least one of:

the user equipment is synchronized with the second target user equipment;

the user equipment carries out synchronous maintenance;

wherein the second target user equipment comprises at least one of:

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment applied to the ue, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

In order to better achieve the above object, as shown in fig. 10, an embodiment of the present invention further provides a user equipment, including: memory 1020, transceiver 1000, processor 1010; a memory 1020 for storing a computer program; a transceiver 1000 for transceiving data under the control of the processor 1010;

a processor 1010 for reading the computer program in the memory and performing the following operations:

Optionally, in the DRX inactive state:

Receiving no direct link control information in the second time unit.

Optionally, the second time unit comprises at least one of:

a reserved time slot within a DRX activation time;

non-uplink time slots within DRX activation time;

synchronization signal slots within DRX active time.

Optionally, during the DRX inactivity time, the processor is further configured to perform at least one of the following:

monitoring control information of a direct link;

a direct link reference signal received power (SL-RSRP) measurement;

and monitoring the data information of the through link.

Optionally, the monitoring by the processor at a first time unit within the DRX activation time includes:

Optionally, the processor is further configured to perform at least one of:

Optionally, the processor determines whether a synchronization signal needs to be received on a synchronization signal slot, including at least one of:

under the condition that the user equipment meets a second condition, determining that the first synchronous signal time slot receives the synchronous signal, and determining that the second synchronous signal time slot does not receive the synchronous signal; the first synchronous signal time slot is a synchronous signal time slot capable of receiving a first synchronous signal, and the second synchronous signal time slot is a synchronous signal time slot incapable of receiving the first synchronous signal; the first synchronization signal is a synchronization signal with a synchronization priority higher than the current synchronization priority of the user equipment;

Optionally, the first condition comprises at least one of:

the user equipment is synchronized with the base station.

the first target user equipment comprises at least one of:

a user equipment directly synchronized with the GNSS;

a user equipment directly synchronized with a base station;

a user equipment that is indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

Optionally, the third condition comprises at least one of:

the user equipment is synchronized with the second target user equipment;

the user equipment carries out synchronous maintenance;

wherein the second target user equipment comprises at least one of:

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

It should be noted that in FIG. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1010 and various circuits of memory represented by memory 1020 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1000 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 1030 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1010 in performing operations.

It should be noted that, the ue provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment applied to the ue, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.

Those skilled in the art will understand that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a computer program instructing relevant hardware, where the computer program includes instructions for executing all or part of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

In addition, a computer-readable storage medium is provided in an embodiment of the present invention, and a computer program is stored on the computer-readable storage medium, where the program, when executed by a processor, implements the steps of the direct link discontinuous reception method applied to the user equipment as described above. And the same technical effect can be achieved, and in order to avoid repetition, the description is omitted. The readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid State Disk (SSD)), etc.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

The object of the invention is thus also achieved by a program or a set of programs running on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that such storage media can be any known storage media or any storage media developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.

Claims

1. A method for discontinuously receiving a direct link is applied to user equipment and is characterized by comprising the following steps:

2. The method of claim 1, wherein the DRX inactivity state:

Receiving no direct link control information in the second time unit.

3. The method of claim 1, wherein the second time unit comprises at least one of:

a reserved time slot within a DRX activation time;

non-uplink time slots within DRX activation time;

synchronization signal slots within DRX active time.

4. The method of claim 1, wherein the target resource pool is at least one resource pool associated with traffic to be sent or received.

5. The method of claim 1, further comprising:

monitoring control information of a direct link;

a direct link reference signal received power (SL-RSRP) measurement;

and monitoring the data information of the through link.

6. The method of claim 1, wherein monitoring for a first time unit within a DRX active time comprises:

7. The method of claim 1, wherein monitoring for a first time unit within a DRX active time comprises:

8. The method of claim 1, wherein the number of the first time units included in the duration of the monitoring in the DRX configuration information is greater than or equal to a second value;

9. The method of claim 1, further comprising at least one of:

10. The method of claim 9, wherein determining whether a synchronization signal needs to be received on a synchronization signal slot comprises at least one of:

11. The method of claim 10, wherein the first condition comprises at least one of:

the user equipment is synchronized with the base station.

12. The method of claim 10, wherein the second condition comprises: the user equipment is synchronized with the first target user equipment;

the first target user equipment comprises at least one of:

a user equipment directly synchronized with the GNSS;

a user equipment directly synchronized with a base station;

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

13. The method of claim 10, wherein the third condition comprises at least one of:

the user equipment is synchronized with a second target user equipment;

the user equipment carries out synchronous maintenance;

wherein the second target user equipment comprises at least one of:

a user equipment indirectly synchronized with the GNSS;

a user equipment that is indirectly synchronized with a base station.

14. A user device, comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following:

15. A direct-link discontinuous reception apparatus, comprising:

16. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the direct link discontinuous reception method according to any one of claims 1 to 13.