CN114667769B

CN114667769B - DRX-based lateral feedback method and related device

Info

Publication number: CN114667769B
Application number: CN202080078346.7A
Authority: CN
Inventors: 赵振山; 卢前溪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2023-10-31
Anticipated expiration: 2040-02-07
Also published as: WO2021155603A1; CN114667769A

Abstract

The embodiment of the application discloses a lateral feedback method and a related device based on DRX, wherein the method comprises the following steps: the first device sends side line data to the second device at a first moment; the first device receives feedback information for the sidestream data from the second device at a second time, wherein the second time is within a continuous monitoring range of the first device. The embodiment of the application can improve the data interaction stability and success rate of the receiving and transmitting end.

Description

DRX-based lateral feedback method and related device

Technical Field

The application relates to the technical field of communication, in particular to a lateral feedback method based on DRX and a related device.

Background

In the existing transmission based on the side-link, a discontinuous reception (Discontinuous Reception, DRX) mechanism is not introduced, and considering that the internet of vehicles service may be transmitted in a broadcast manner, all terminals are in a receiving state when data is not transmitted, but this causes great power consumption of the terminals, and especially for handheld terminals, how to reduce the power consumption is a problem to be solved. In the problem of the side-link enhancement, it is discussed that a DRX mechanism is introduced in the side-link transmission, and the terminal is not always in a receiving state, but receives in a continuous listening time (i.e. on duration) according to the configuration of the DRX, and if no data is received, the terminal changes to the DRX, i.e. stops continuous listening (off duration), so as to achieve the purpose of saving power. However, for unicast and multicast communications, the transmitting end transmits side line data to the receiving end, and expects to receive side line feedback information from the receiving end, at this time, how to ensure that the side line feedback information transmitted by the receiving end is located in the continuous listening range of the transmitting end, so that the feedback information can be correctly received is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a lateral feedback method based on DRX and a related device, aiming at improving the stability and success rate of data interaction of a receiving end.

In a first aspect, an embodiment of the present application provides a lateral feedback method based on DRX, including:

the first device sends side line data to the second device at a first moment;

the first device receives feedback information for the sidestream data from the second device at a second time, wherein the second time is within a continuous monitoring range of the first device.

In a second aspect, an embodiment of the present application provides a lateral feedback method based on DRX, including:

the second equipment receives sidestream data sent by the first equipment at a first moment;

and the second device sends feedback information aiming at the sidestream data to the first device, wherein the feedback information is received by the first device at a second moment, and the second moment is in a continuous monitoring range of the first device.

In a third aspect, an embodiment of the present application provides a DRX-based sidestream feedback apparatus, applied to a first device, where the apparatus includes a processing unit and a communication unit, where,

the processing unit is used for sending side line data to the second equipment at the first moment through the communication unit; and receiving, by the communication unit, feedback information for the sidestream data from the second device at a second time, the second time being within a continuous listening range of the first device.

In a fourth aspect, an embodiment of the present application provides a DRX-based sidestream feedback apparatus, applied to a network device, where the apparatus includes a processing unit and a communication unit, where,

the processing unit is used for receiving sidestream data sent by the first equipment at a first moment through the communication unit; and sending feedback information for the sidestream data to the first device through the communication unit, wherein the feedback information is received by the first device at a second moment, and the second moment is in a continuous monitoring range of the first device.

In a fifth aspect, an embodiment of the present application provides a terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in any of the methods of the first aspect of the embodiments of the present application.

In a sixth aspect, an embodiment of the present application provides a network device comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured for execution by the processor, the programs comprising instructions for performing the steps in any of the methods of the second aspect of the embodiments of the present application.

In a seventh aspect, an embodiment of the present application provides a chip, including: a processor for calling and running a computer program from a memory, so that a device on which the chip is mounted performs some or all of the steps as described in any of the methods of the first or second aspects of the embodiments of the application.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform part or all of the steps as described in any of the methods of the first or second aspects of the embodiments of the present application.

In a ninth aspect, embodiments of the present application provide a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps described in any of the methods of the first or second aspects of the embodiments of the present application. The computer program may be a software installation package.

It can be seen that in the embodiment of the present application, the first device sends the sidestream data to the second device at the first time, the first device receives feedback information for the sidestream data from the second device at the second time, and the second time is within a continuous monitoring range of the first device, so that the sidestream feedback information sent by the receiving end is located within the continuous monitoring range of the sending end, and therefore, the sending end can correctly receive the feedback information, and the stability and success rate of data interaction of the receiving end are improved.

Drawings

The drawings that accompany the embodiments or the prior art description can be briefly described as follows.

FIG. 1A is a schematic diagram of a mode A according to an embodiment of the present application;

FIG. 1B is a schematic diagram of a mode B according to an embodiment of the present application

Fig. 1C is a schematic diagram of unicast transmission provided by an embodiment of the present application;

fig. 1D is a schematic diagram of multicast transmission according to an embodiment of the present application;

fig. 1E is a schematic diagram of broadcast transmission provided by an embodiment of the present application;

fig. 1F is a schematic diagram of resources of a sidelink feedback channel provided by an embodiment of the present application;

fig. 1G is a schematic diagram of a basic mechanism of DRX provided by an embodiment of the present application;

fig. 1H is a schematic diagram of information interaction between UE1 and UE2 according to an embodiment of the present application;

fig. 2A is a schematic flow chart of a lateral feedback method based on DRX according to an embodiment of the present application;

fig. 2B is a schematic diagram of transmission resources under continuous listening state switching according to an embodiment of the present application;

fig. 2C is a schematic diagram of transmission resources of UE1 and UE2 under the constraint of a second timer according to an embodiment of the present application;

fig. 2D is a schematic diagram of transmission resources of UE1 and UE2 with the same DRX configuration information according to an embodiment of the present application;

Fig. 2E is a schematic diagram of transmission resources of UE1 and UE2 with different DRX configuration information according to an embodiment of the present application;

fig. 2F is a schematic diagram of a transmission resource and PSFCH of sidestream data according to an embodiment of the present application;

fig. 2G is a schematic diagram of a time slot resource of a PSFCH under a continuous listening range constraint according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a first device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a second device according to an embodiment of the present application;

fig. 5 is a functional unit composition block diagram of a lateral feedback device based on DRX according to an embodiment of the present application;

fig. 6 is a functional unit composition block diagram of a lateral feedback device based on DRX according to an embodiment of the present application.

Detailed Description

The technical scheme in the embodiment of the application will be described below with reference to the accompanying drawings.

The first device and the second device in the embodiments of the present application may refer to a user equipment, an access terminal, a user unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user apparatus. The terminal may also be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a relay device, an in-vehicle device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved public land mobile network (public land mobile network, PLMN), etc., as embodiments of the present application are not limited in this respect.

The network device in the embodiment of the present application may be a device for communicating with a terminal, which may be a base station (base transceiver station, BTS) in a global system for mobile communications (global system for mobile communications, GSM) or code division multiple access (code division multiple access, CDMA), a base station (NodeB, NB) in a wideband code division multiple access (wideband code division multiple access, WCDMA) system, an evolved NodeB (eNB or eNodeB) in an LTE system, a wireless controller in a cloud wireless access network (cloud radio access network, CRAN) scenario, or a relay device, an access point, a vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, one or a group (including a plurality of antenna panels) of base stations in a 5G system, or a network node that forms a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), or the present application is not limited thereto.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer may eventually become information of the PHY layer or be converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by the DU or by the du+aau. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which the present application is not limited to.

The internet of vehicles is a side link transmission technology (SL) based on Device-to-Device (D2D), and unlike a conventional cellular system in which communication data is received or transmitted through a base station, the internet of vehicles system adopts a terminal-to-terminal direct communication manner, and has higher spectral efficiency and lower transmission delay. The internet of vehicles technology was standardized in third generation partnership project (Third Generation Partner Project,3 GPP) release 14 (Rel-14), defining two transmission modes: mode a and mode B.

Mode a: referring to fig. 1A, a transmission resource of a terminal is allocated by a base station, and the terminal performs data transmission on a side link according to the resource allocated by the base station; the base station can allocate resources of single transmission for the terminal, and can allocate resources of semi-static transmission for the terminal; the base station allocates side Downlink transmission resources through Downlink (DL) control signaling.

Mode B: referring to fig. 1B, the terminal adopts a transmission method of interception (sensing) and reservation (reservation). The terminal acquires an available transmission resource set in a resource pool in a interception mode, and randomly selects one resource from the set to transmit data. Because the service in the internet of vehicles system has a periodic characteristic, the terminal generally adopts a semi-static transmission mode, that is, after the terminal selects one transmission resource, the resource is continuously used in a plurality of transmission periods, so that the probability of resource reselection and resource conflict is reduced. The terminal can carry the information of the reserved secondary transmission resources in the control information of the current transmission, so that other terminals can judge whether the resources are reserved and used by the user or not by detecting the control information of the user, and the purpose of reducing resource conflict is achieved.

In New Radio, NR) -vehicles to other devices (Vehicle to Everything, V2X), automatic driving needs to be supported, and thus higher requirements are put on data interaction between vehicles, such as higher throughput, lower latency, higher reliability, larger coverage, more flexible resource allocation, etc. In long term evolution (Long Term Evaluation, LTE) -V2X, a broadcast transmission scheme is supported, and in NR-V2X, a unicast and multicast transmission scheme is introduced. For unicast transmission, the receiving end has only one terminal, as in fig. 1C, unicast transmission is performed between the user equipment UE1 and UE 2; for multicast transmission, the receiving end is all terminals in a communication group, or all terminals in a certain transmission distance, as shown in fig. 1d, UE1, UE2, UE3 and UE4 form a communication group, wherein UE1 sends data, and other terminal devices in the group are all receiving ends; for the broadcast transmission mode, the receiving end is any one terminal, as shown in fig. 1E, where UE1 is the transmitting end, and other terminals around it are all receiving ends.

Side feedback channel: in NR-V2X, a side-by-side feedback channel is introduced for improved reliability. For example, for unicast transmission, the transmitting end transmits sidestream data (including a physical sidestream control channel (Physical Sidelink Control Channel, PSCCH) and a physical sidestream shared channel (Physical Sidelink Shared Channel, PSSCH)) to the receiving end, the receiving end transmits hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) feedback information to the transmitting end, and the transmitting end determines whether retransmission is required according to the feedback information of the receiving end. Wherein the HARQ feedback information is carried in a sidestream feedback channel, e.g. a physical sidestream feedback channel (Physical Sidelink Feedback Channel, PSFCH). The side line feedback can be activated or deactivated through the pre-configuration information or the network configuration information, if the side line feedback is activated, the receiving end receives the side line data sent by the sending end, and feeds back HARQ ACK or NACK to the sending end according to the detection result, and the sending end decides to send retransmission data or new data according to the feedback information of the receiving end; if the side feedback is deactivated, the receiving end does not need to send feedback information, and the transmitting end generally adopts a blind retransmission mode to send data, for example, the transmitting end repeatedly sends each side data K times, instead of deciding whether to need to send retransmission data according to the feedback information of the receiving end.

Resources of the sidelink feedback channel: to reduce the overhead of the PSFCH channel, one slot defined in every N slots includes a PSFCH transmission resource, i.e. the period of the sidelink feedback resource is N slots, where n=1, 2, 4, the parameter N is preconfigured or network configured, and the schematic diagram of n=4 is shown in fig. 1F, where PSSCH transmitted in slots 2, 3, 4, 5, and its feedback information is transmitted in slot 7, so that slots {2, 3, 4, 5} can be regarded as a set of slots, where the PSSCH transmitted in the set of slots is in the same slot. A transmitting end (TX UE) transmits PSCCH/PSSCH in slot n, a receiving end (RX UE) transmits PSFCH in the first available slot after slot n+k, where k is a configuration parameter, k=2 or k=3, e.g. in fig. 1F, the network configuration k=2, TX UE transmits PSCCH/PSSCH in slot 4, and the receiving end transmits PSFCH in the first available slot after slot 6, i.e. slot 7.

DRX mechanism of NR Uu port: in a wireless network, when there is data to be transmitted, a User Equipment (UE) needs to monitor a physical downlink control channel (Physical Downlink Control Channel, PDCCH) all the time, and send and receive data according to an indication message sent by a network side, so that power consumption of the UE and delay of data transmission are both relatively large. The 3GPP standard protocol therefore introduces a discontinuous reception mechanism (Discontinuous Reception, DRX) power saving policy in the LTE system.

As shown in fig. 1G, the basic mechanism of DRX is to configure a DRX cycle for a UE in a radio resource control CONNECTED rrc_connected state. The DRX cycle consists of an active period On Duration "and a sleep period Opportunity for DRX": during the "On Duration" time, the UE listens for and receives PDCCH (active period); during the "Opportunity for DRX" time, the UE does not receive the PDCCH to reduce power consumption (sleep period).

In DRX operation, the terminal controls the terminal to activate on duration and deactivate off duration according to some timer parameters of the network configuration.

As shown in fig. 1H: UE1 transmits PSCCH/PSSCH to UE2, and the time of the data transmission is within the continuous listening range of UE2 and thus can be received by UE2, and UE2 transmits feedback information PSFCH for the sideline data to UE1, but the time of the PSFCH transmission is not within the continuous listening range of UE1, resulting in failure of UE1 to receive the feedback information.

In view of the foregoing, an embodiment of the present application provides a lateral feedback method based on DRX, which is described in detail below with reference to the accompanying drawings.

Referring to fig. 2A, fig. 2A is a flow chart of a lateral feedback method based on DRX according to an embodiment of the present application, as shown in the drawings, the method includes:

In step 201, the first device sends sidestream data to the second device at a first time.

The side line data includes side line data transmitted for the first time or retransmitted, which may be data carried on PSCCH/psch.

In step 202, the second device receives sidestream data sent by the first device at a first time.

The first time is any time in a transmission period of the first device transmitting side line data, and the first time may or may not be in a continuous monitoring range of the second device, which is not limited only herein. In addition, the time the second device receives the sidestream data is in the continuous listening range of the second device.

Step 203, the second device sends feedback information for the sidestream data to the first device, where the feedback information is received by the first device at a second time, and the second time is within a continuous listening range of the first device.

Step 204, the first device receives feedback information for the sidestream data from the second device at a second time, where the second time is within a continuous listening range of the first device.

The feedback information of the sideline data may be data carried on the PSFCH.

The continuous monitoring range refers to a time range in which the device is in a continuous monitoring state. The second time is a time after the first time, specifically any time in a receiving period of feedback information of the sidestream data, for example, a data receiving completion time of feedback information of the sidestream data, where the receiving period is in a continuous monitoring range of the first device.

In one possible example, the method further comprises: the first device transitions to a continuous listening state. Correspondingly, the first device changes to a continuous monitoring state after sending the sidestream data.

Wherein the first device may initially be in a sleep period (also referred to as an inactive period) of the DRX mechanism, such as in a sleep state prior to performing the transmit side data operation.

In a specific implementation, before the data receiving start time of the feedback information of the sidestream data, the first device performs an operation of switching to a continuous monitoring state.

In this example, the first device may actively perform DRX state switching, so as to ensure that feedback information of the side uplink from the second device can be received, thereby improving stability and success rate of side uplink data interaction.

In one possible example, the first device transitions to a continuous listening state comprising: and the first equipment changes into a continuous monitoring state after sending the sidestream data.

The time after the side line data is sent specifically refers to the time when the data sending of the side line data is completed. The transmission duration of the sidestream data may be 1 slot, 2 slots, 1 sub-slot, 1 sub-frame, etc., which is not limited herein.

For example, as shown in fig. 2B, assuming that UE1 starts to transmit PSCCH/PSSCH at time H1 and completes to transmit PSCCH/PSSCH at time H2, the second device transitions to a continuous listening state at time H2, and the time interval between time H1 and time H2 is one slot.

In this example, the first device may switch to the continuous monitoring state after the sidestream data transmission is completed, so as to avoid the state switching from affecting the stability and efficiency of data transmission and ensure the data transmission efficiency.

In one possible example, the first device transitions to a continuous listening state comprising: and the first device starts a first timer after sending the sidestream data, and the first device is switched to a continuous monitoring state under the condition that the first timer is overtime.

In this possible example, the duration of the first timer is determined according to the time interval between the transmission resource of the sidelink data and its corresponding physical sidelink feedback channel PSFCH.

Wherein the transmission resource comprises a PSSCH or a PSCCH. The duration of the first timer is determined according to the time interval between the sidestream data and its corresponding sidestream feedback channel. Because the transmission resources of the sidestream feedback information are configured by each PSSCH resource pool, the transmitting end (corresponding to the first device) transmits sidestream data in the resource pool, and the transmission resources of the corresponding sidestream feedback in the resource pool can be obtained, when the transmitting end transmits the sidestream data, the transmission time of the sidestream feedback channel PSFCH can be obtained, and therefore, the transmitting end can be converted into a continuous monitoring state before the PSFCH transmission time.

In this example, the state switching of the first device is constrained by the first timer, so that the first device can be turned into a continuous listening state before the PSFCH transmission time, and the success rate of the side uplink information interaction is ensured.

In one possible example, the first device transitions to a continuous listening state comprising: and the first equipment is switched to a continuous monitoring state at a third moment after the first moment, and the duration between the first moment and the third moment is a duration N1.

In this possible example, the duration N1 is determined according to a time interval between the transmission resource of the sideline data and its corresponding PSFCH.

Wherein the transmission resource includes a PSSCH or a PSCCH, and the duration N1 may be determined according to a time interval between the sideline data and the sideline feedback channel. Because the transmission resources of the sidestream feedback information are configured by each PSSCH resource pool, the transmitting end (corresponding to the first device) transmits sidestream data in the resource pool, and the transmission resources of the corresponding sidestream feedback in the resource pool can be obtained, when the transmitting end transmits the sidestream data, the transmission time of the sidestream feedback channel PSFCH can be obtained, and therefore, the transmitting end can be converted into a continuous monitoring state before the PSFCH transmission time.

In this example, the state switching of the first device is constrained by the duration N1, so that the first device can be turned into a continuous listening state before the PSFCH transmission time, and the success rate of the side uplink information interaction is guaranteed.

In one possible example, the continuous listening state is a first continuous listening state, the first continuous listening state being a continuous listening state determined from a first lateral DRX configuration parameter.

In this possible example, the time ranges of the first continuous monitoring state and the second continuous monitoring state are different, the second continuous monitoring state is a continuous monitoring state determined according to a second sidestream DRX configuration parameter, and the first sidestream DRX configuration parameter is different from the second sidestream DRX configuration parameter.

The network device may configure a first sidestream DRX configuration parameter and a second sidestream DRX configuration parameter for the first device, where the first sidestream DRX configuration parameter and the second sidestream DRX configuration parameter may include at least one of the following parameters:

first DRX parameters: a timer for determining a continuous listening range, e.g., drx-onduration timer;

second DRX parameters: when the terminal receives the PSCCH, a second timer is started, and the terminal is in a continuous monitoring state before the second timer is invalid, for example, a drx-InactivityTimer;

third DRX parameter: for determining a DRX cycle (cycle) and/or a position or time domain offset of a starting subframe, e.g., DRX-longcycle offset;

Fourth DRX parameter: a slot offset, e.g., drx-SlotOffset, for determining a continuous listening range;

fifth DRX parameter: a timer for determining when the terminal goes into a continuous listening state, for example, drx-onduration timer1.

The first device may determine, according to a second sidestream DRX configuration parameter, for example, the first DRX parameter, to perform continuous listening, that is, continuous listening in a time range in which DRX-onduration timer is activated, and may also be configured with a first sidestream DRX configuration parameter, for example, the fifth DRX parameter, and determine, according to the first sidestream DRX configuration parameter, a first continuous listening state that starts after the first device sends sidestream data (at a time point when data transmission is completed or at a third time point).

For example, the network device may configure drx-onduration timer1 for determining a first continuous listening range (corresponding to a first continuous listening state), i.e. a continuous listening range of the first device.

In this example, the first device may be configured with differentiated sidestream DRX configuration parameters to flexibly adapt to an application scenario after sidestream data transmission, so as to improve the flexibility of using the DRX mechanism.

In one possible example, the method further comprises: the first device opens a second timer after a data transmission start time of the sidestream data, and stops the continuous listening state when the second timer times out.

Optionally, the first device is in a continuous listening state before the second timer expires.

Optionally, the duration of the second timer is determined according to a maximum time interval between sidelink transmission resources that can be indicated in the sidelink control information SCI.

In a specific implementation, the first device indicates, through the SCI, time-frequency information of transmission resources, where the SCI of the first device may indicate n_max transmission resources, where n_max may be configured to be 2 or 3, for example, and when n_max=2, the SCI may indicate at most 2 transmission resources, where n_max is used to transmit the same side line data (including first transmission and retransmission); when n_max=3, SCI may indicate a maximum of 3 transmission resources, but the time interval between the first transmission resource and the last transmission resource is a maximum of 31 (or 32) slots, regardless of whether n_max is equal to 2 or 3. Thus, t2=31 or t2=32 is preferable.

For example, as shown in fig. 2C, UE1 (corresponding to the first device) sends sidestream data to UE2 at time h1, and is the first transmission of the sidestream data, after sending the sidestream data (e.g., the time of completing data sending), UE1 goes to a continuous listening state, and opens a second timer, where the duration of the second timer is n2=31 slots; the UE2 sends PSFCH to the UE1 at the time h2, the channel carries NACK information, the UE1 sends retransmission data at the time h3, and restarts the second timer, the UE2 feeds back ACK information to the UE1 at the time h4, the UE1 stops continuous monitoring state, and the second timer is stopped; or the UE1 receives the ACK, does not stop continuous listening, does not stop the second timer, and stops continuous listening when the second timer times out.

Optionally, the duration of the second timer is determined according to a time interval between sidelink transmission resources indicated in the SCI sent by the first device.

For example, the transmitting end transmits SCI indicating 2 transmission resources to the receiving end, and the time interval is 10 slots (32 at the maximum slot interval indicated by SCI), so the timer takes a value of 10.

In this example, the first device can stop the continuous listening state under the constraint of the second timer to save power and improve the endurance.

Furthermore, the method may further comprise: the first device opens a second timer at a data transmission start time of the sidestream data, and stops the continuous listening state when the second timer times out.

In this possible example, the method further includes: the first device opens a second timer at the data transmission completion time of the sidestream data, and stops the continuous monitoring state when the second timer times out.

The step of transmitting the sidestream data specifically means that after the first device finishes transmitting the sidestream data, if the sidestream data transmission duration is 1 time slot, the first device transmits the sidestream data in a time slot n, and when the time slot n+1 is transmitted, the second timer is started.

In this example, the first device opens the second timer after the sidestream data transmission is completed, so that the influence of the second timer on the data transmission stability when the sidestream data transmission is not completed is avoided, and the information interaction stability is improved.

In this possible example, the first device opening a second timer after a data transmission start time of the sidestream data, including: the first device opens a second timer at a fourth time subsequent to the first time.

Optionally, the duration between the first time and the fourth time is a duration N2, where the duration N2 is determined according to a time interval between the transmission resource of the sidestream data and the PSFCH corresponding to the transmission resource of the sidestream data.

Wherein, the transmission resource comprises PSSCH or PSCCH, and the duration N2 is determined according to the time interval between the side line data and the corresponding side line feedback channel. Because the transmission resources of the sidestream feedback information are configured by each PSSCH resource pool, the transmitting end (corresponding to the first device) transmits sidestream data in the resource pool, and can learn the transmission resources of the corresponding sidestream feedback in the resource pool, when the transmitting end transmits the sidestream data, the transmitting end can learn the transmission time of the sidestream feedback channel PSFCH, and therefore, the transmitting end can start the second timer before the PSFCH transmission time to ensure that the continuous monitoring state can not be stopped.

In this example, the first device constrains the opening time of the second timer by the duration N2, so that the sending end is prevented from being enabled by the second timer to stop the continuous monitoring state before the PSFCH transmission time, and the stability of information interaction is improved.

Optionally, the fourth time is a time when the first timer expires, or the fourth time is a time slot next to the time when the first timer expires.

It can be seen that in this example, the first timer opens the second timer after it times out, so that the continuous listening state of the first device is synchronously timed from the second timer opening moment.

In this possible example, the feedback information of the sidestream data is a negative acknowledgement NACK; the method further comprises the steps of: the first device restarts the second timer.

In this example, the first device receives NACK feedback information to confirm that the sidestream data needs to be retransmitted, and the second timer is restarted to ensure that the continuous monitoring state is not stopped too early, so as to ensure the success rate of information interaction.

In this possible example, the method further includes: and restarting the second timer when the first device retransmits the sidestream data.

In this example, restarting the second timer when the first device retransmits the sidestream data can ensure that the continuous monitoring state is not stopped too early, and ensure the success rate of information interaction.

In this possible example, the feedback information of the sidestream data is a positive acknowledgement ACK; the method further comprises the steps of: the first device stops the second timer.

In this example, the first device may not retransmit the sidestream data after receiving the ACK, so stopping the second timer to stop the continuous listening state of the local device may save power and increase the endurance.

In this possible example, the method further includes: the first device stops the continuous listening state when the second timer stops and a third timer expires.

The first device is in a continuous monitoring state before the timer fails, and when any one of the second timer and the third timer is still in an active state, the first device is always in the continuous monitoring state, and only when both timers fail, the continuous monitoring state is ended and the first device is switched to the DRX state.

In this possible example, the method further includes: the first device stops the continuous listening state when the second timer times out and a third timer times out.

In one possible example, the feedback information of the sidestream data is a positive acknowledgement ACK; the method further comprises the steps of: the first device stops the continuous listening state.

In this example, the first device may not retransmit the sidestream data after receiving the ACK, so that the continuous listening state is stopped, and power may be saved to increase endurance.

In one possible example, the method further comprises: and after receiving the feedback information of the sidestream data, the first device stops the continuous monitoring state.

In this example, the first device may stop the continuous monitoring state after receiving the feedback information, so as to save power and increase endurance.

In one possible example, the method further comprises: and when the first equipment receives the feedback information of the sidestream data, opening or restarting a fourth timer, and continuously monitoring before the fourth timer is overtime.

The fourth timer may be drx-InactivityTimer.

It can be seen that in this example, the first device keeps continuously listening until the DRX-inactivity timer times out, ensuring DRX mechanism accuracy.

In one possible example, the continuous listening range is determined according to a first DRX parameter of the first device.

The first DRX parameter may be DRX ondurationTimer.

In this possible example, the sending, by the first device, side line data to the second device at a first time includes: and the first equipment selects a first transmission resource, the sidestream data is sent to the second equipment through the first transmission resource, and the time domain starting position of the first transmission resource is the first moment. Correspondingly, the first moment is the time domain starting position of the first transmission resource selected by the first device.

The time domain resource of the first transmission resource may be 1 time slot, 2 time slots, 1 sub-time slot, 1 sub-frame, etc., which is not limited herein.

In this example, the first device actively selects the selected transmission resource, so as to ensure that the received feedback information is located in the continuous listening range.

In this possible example, the first transmission resource is in the continuous listening range, and a time interval between a time domain start position of the first transmission resource and an end time of the continuous listening range is greater than or equal to a duration N3, where the duration N3 is determined according to a time interval between the first transmission resource and its corresponding PSFCH.

In this possible example, the first device and the second device have the same DRX configuration information.

Wherein the first device and the second device have the same DRX configuration.

For example, a group head terminal coordinates DRX configuration information of all terminals in a group in multicast communication, so that all terminals in the group have the same DRX configuration; or in unicast communication, the transmitting end and the receiving end coordinate the DRX configuration when establishing a connection (coordinate the DRX configuration information through SCI information or PC5-RRC signaling), so that the transmitting end and the receiving end have the same DRX configuration.

In this possible example, the continuous listening range is [ T1, T2], where T1 is determined according to the starting time of the continuous listening range, and T2 is determined according to the ending time of the continuous listening; the second moment is within the time range [ T1, T2 ].

Wherein, T1 and T2 may correspond to the start time and the end time, or may correspond to the start positions of the first time slot and the last time slot of the continuous listening range.

In this possible example, the time domain range of the first transmission resource is [ t1, t2], where the sidestream feedback information corresponding to the sidestream data sent by the first device at the time t1 is sent or received at the time t3, and the sidestream feedback information corresponding to the sidestream data sent by the first device at the time t2 is sent or received at the time t 4. Wherein, the time t1 corresponds to the first available PSSCH transmission resource in the continuous monitoring range, and the time t4 corresponds to the last available PSFCH transmission resource in the continuous monitoring range.

For example, as shown in fig. 2D, PSSCHs transmitted by UE1 in the range of [ t1, t2] are all located in the continuous listening range of UE2 and thus can be received by UE2, and PSFCHs transmitted by UE2 are located in the continuous listening range of UE1 and thus can be received by UE 1. The PSFCH that UE2 starts to transmit at time t3 is side feedback for the PSSCH that UE1 starts to transmit at time t1, and the PSFCH that UE2 starts to transmit at time t4 is side feedback for the PSSCH that UE1 completes to transmit at time t 2. t1 corresponds to the first available PSSCH slot in a continuous listening range; t4 corresponds to the last available PSFCH slot in the continuous listening range. Therefore, the transmitting end selects a transmission resource in the range of [ t1, t2] for transmitting the PSCCH/PSSCH, and the transmission time part of the corresponding PSFCH is located in the continuous monitoring range of the UE 1.

For example, as shown in fig. 2E, the DRX configurations of UE1 and UE2 are different, where the continuous listening range of UE1 is [ Q1, Q2], the first transmission resource selected by UE1 is in [ P1, P2], its corresponding PSFCH is in [ Q1, Q2], time slot s5 is the earliest PSFCH of [ Q1, Q2] (assuming that the transmission duration of the PSFCH is one time slot), time slot s6 is the latest PSFCH of [ Q1, Q2], where time P1 corresponds to the earliest transmission time slot of the PSSCH associated with the PSFCH transmitted by time slot s5, and time P2 corresponds to the latest transmission time slot of the PSSCH associated with the PSFCH transmitted by time slot s6, so that it can be ensured that the PSSCHs transmitted in [ P1, P2] are all in the continuous listening range of UE 1.

For example, as shown in fig. 2F, the transmitting end selects the transmission resource at S3 time (indicating the start time of one time slot in the continuous listening range) in the continuous listening range, sends the side line data, and according to the resource pool configuration information, the receiving end starts to send the PSFCH at time S3, for example, s3=s3+2 time slots, where the S3 time selected by the transmitting end needs to make the PSFCH sent at S3 time be in the continuous listening range.

Assuming that the selected time for transmitting the PSSCH is S3, t_gap represents the minimum time interval between the PSSCH and the corresponding PSFCH, the slot S3 for transmitting the PSFCH is the first available slot greater than or equal to s3+t_gap, as in fig. 2G, if S3 is slot2, t_gap is 2 slots, and each 4 slots includes a slot for transmitting the PSFCH, as in the correspondence of fig. 2G, the PSSCH transmitted at the s3=slot 2 start time is transmitted with its corresponding PSFCH at the first available slot (i.e., s3=slot 7 start time) after slot4, and therefore, in order for the PSFCH to be received by the transmitting end, slot7 should be located within the continuous listening range of the transmitting end.

In this possible example, the first transmission resource is within a connection listening range of the second device.

In this possible example, the first device starts a fifth timer after receiving the sidestream feedback information at the second time, and is in a continuous listening state before the fifth timer times out.

The fifth timer may be, for example, drx-InactivityTimer. After the first device receives the data (i.e. feedback information) sent by the second device, the first device will start/start a fifth timer, and extend the continuous monitoring range, so as to ensure that more data (or feedback information) sent by the second device can be received.

Wherein the selected first transmission resource is located in a continuous listening range [ T1, T2], which may be determined based on a first DRX parameter (i.e., drx_onduration timer), or may be determined according to a fifth timer (i.e., DRX-incactivity timer); after receiving the feedback information, a timer is started, the continuous monitoring range is prolonged, and transmission resources can be selected in the range.

For example, selecting the first transmission resource to transmit side line data in the continuous listening range determined according to the drx_onduration timer, receiving feedback information (such as NACK), starting a fifth timer, further selecting a second transmission resource (the second transmission resource may be located in an extended continuous listening range) to transmit retransmission data, and restarting the fifth timer again and continuing to select retransmission resources if NACK is received; if an ACK is received, the fifth timer is stopped, or the continuous listening state is stopped.

In this example, the appropriate transmission resource is selected, so that the transmission time of the PSFCH corresponding to the PSSCH transmitted on the transmission resource is located in the continuous listening range of the transmitting end, so that the PSFCH can be received.

Referring to fig. 3, in accordance with the embodiment shown in fig. 2A, fig. 3 is a schematic structural diagram of a first device 300 according to an embodiment of the present application, as shown in the fig. 3, the first device 300 includes a processor 310, a memory 320, a communication interface 330, and one or more programs 321, where the one or more programs 321 are stored in the memory 320 and configured to be executed by the processor 310, and the one or more programs 321 include instructions for performing the following operations.

Transmitting sidestream data to the second device at a first time; and receiving feedback information for the sidestream data from the second device at a second time instant, the second time instant being within a continuous listening range of the first device.

In one possible example, the program further comprises instructions for: and switching to a continuous monitoring state.

In one possible example, in the aspect of the transition to the continuous listening state, the instructions in the program are specifically configured to: and switching to a continuous monitoring state after the sidestream data is sent.

In one possible example, in the aspect of the transition to the continuous listening state, the instructions in the program are specifically configured to: and opening a first timer after the sidestream data is sent, and turning the first equipment into a continuous monitoring state under the condition that the first timer is overtime.

In one possible example, the duration of the first timer is determined according to a time interval between the transmission resources of the sidelink data and its corresponding physical sidelink feedback channel PSFCH.

In one possible example, in the aspect of the transition to the continuous listening state, the instructions in the program are specifically configured to: and switching to a continuous monitoring state at a third moment after the first moment, wherein the duration between the first moment and the third moment is a duration N1.

In one possible example, the duration N1 is determined according to a time interval between transmission resources of the sideline data and its corresponding PSFCH.

In one possible example, the continuous listening state is a first continuous listening state, which is a continuous listening state determined according to a first lateral DRX configuration parameter.

In one possible example, the time ranges of the first continuous listening state and the second continuous listening state are different, the second continuous listening state being a continuous listening state determined according to a second sidestream DRX configuration parameter, the first sidestream DRX configuration parameter being different from the second sidestream DRX configuration parameter.

In one possible example, the program further comprises instructions for: and opening a second timer after the data transmission starting time of the sidestream data, and stopping the continuous monitoring state when the second timer is overtime.

In one possible example, the program further comprises instructions for: and opening a second timer at the data transmission completion time of the sidestream data, and stopping the continuous monitoring state when the second timer is overtime.

In one possible example, in terms of opening the second timer after the data transmission start time of the sidestream data, the instructions in the program are specifically for: and opening a second timer at a fourth time after the first time.

In one possible example, the duration between the first time and the fourth time is a duration N2, where the duration N2 is determined according to a time interval between the transmission resource of the sidestream data and its corresponding PSFCH.

In one possible example, the fourth time is the time when the first timer expires, or the fourth time is the next time slot when the first timer expires.

In one possible example, the feedback information of the sidestream data is a negative acknowledgement NACK; the program further includes instructions for: restarting the second timer.

In one possible example, the program further comprises instructions for: and restarting the second timer when retransmitting the sidestream data.

In one possible example, the feedback information of the sidestream data is a positive acknowledgement ACK; the program further includes instructions for: stopping the second timer.

In one possible example, the program further comprises instructions for: and stopping the continuous monitoring state when the second timer is stopped and a third timer is overtime.

In one possible example, the program further comprises instructions for: and stopping the continuous monitoring state when the second timer is overtime and the third timer is overtime.

In one possible example, the duration of the second timer is determined according to a maximum time interval between sidelink transmission resources that can be indicated in the sidelink control information SCI.

In one possible example, the duration of the second timer is determined according to a time interval between sidelink transmission resources indicated in the SCI sent by the first device.

In one possible example, the feedback information of the sidestream data is a positive acknowledgement ACK; the program further includes instructions for: stopping the continuous monitoring state.

In one possible example, the program further comprises instructions for: and stopping the continuous monitoring state after receiving the feedback information of the sidestream data.

In one possible example, the program further comprises instructions for: and when receiving the feedback information of the sidestream data, starting or restarting a fourth timer, and continuously monitoring before the fourth timer is overtime.

In one possible example, in said transmitting side line data to the second device at the first time instant, the instructions in the program are specifically for: and selecting a first transmission resource, and sending the sidestream data to the second device through the first transmission resource, wherein the time domain starting position of the first transmission resource is the first moment.

In one possible example, the first transmission resource is within the continuous listening range, and a time interval between a time domain start position of the first transmission resource and an end time of the continuous listening range is greater than or equal to a duration N3, wherein the duration N3 is determined according to a time interval between the first transmission resource and its corresponding PSFCH.

In one possible example, the first device and the second device have the same DRX configuration information.

In one possible example, the continuous listening range is [ T1, T2], where T1 is determined according to the continuous listening range start time and T2 is determined according to the continuous listening end time; the second moment is within the time range [ T1, T2 ].

In one possible example, the time domain range of the first transmission resource is [ T1, T2], where the sidestream feedback information corresponding to the sidestream data sent by the first device at the time T1 is sent or received at the time T1, and the sidestream feedback information corresponding to the sidestream data sent by the first device at the time T2 is sent or received at the time T2.

In one possible example, the first transmission resource is within a continuous listening range of the second device.

In one possible example, the first device starts a fifth timer after receiving the sidestream feedback information at the second time instant, and is in a continuous listening state before the fifth timer expires.

In one possible example, the sidestream data includes first transmitted or retransmitted sidestream data.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a second device 400 according to an embodiment of the present application, as shown in the drawing, the second device 400 includes a processor 410, a memory 420, a communication interface 430, and one or more programs 421, where the one or more programs 421 are stored in the memory 420 and configured to be executed by the processor 410, and the one or more programs 421 include instructions for performing the following operations.

Receiving sidestream data sent by first equipment at a first moment; and sending feedback information for the sidestream data to the first device, wherein the feedback information is received by the first device at a second moment, and the second moment is in a continuous monitoring range of the first device.

In one possible example, the first device transitions to a continuous listening state after transmitting the sidestream data.

In one possible example, the first time is a time domain start position of a first transmission resource selected by the first device.

The scheme of the embodiment of the application is mainly introduced from the interaction angle among the network elements. It will be appreciated that, in order to achieve the above-mentioned functions, the terminal includes corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional units of the terminal according to the method example, for example, each functional unit can be divided corresponding to each function, and two or more functions can be integrated in one processing unit. The integrated units described above may be implemented either in hardware or in software program modules. It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice.

In case of integrated units, fig. 5 shows a block diagram of one possible functional unit composition of the DRX-based sidestream feedback apparatus as referred to in the above embodiment. The DRX-based sidestream feedback apparatus 500 is applied to the first device, and specifically includes: a processing unit 502 and a communication unit 503. The processing unit 502 is configured to control and manage actions of the first device, for example, the processing unit 502 is configured to support a terminal to perform related processes of the techniques described herein. The communication unit 503 is configured to support communication between the first device and other devices. The first device may further comprise a storage unit 501 for storing program code and data of the first device.

The processing unit 502 may be a processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an Application-specific integrated circuit (ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 503 may be a communication interface, a transceiver circuit, etc., and the storage unit 501 may be a memory. When the processing unit 502 is a processor, the communication unit 503 is a communication interface, and the storage unit 501 is a memory, the terminal according to the embodiment of the present application may be the first device shown in fig. 3.

In particular implementation, the processing unit 502 is configured to perform any step performed by the first device in the above-described method embodiment, and when performing data transmission such as sending, the communication unit 503 is optionally invoked to complete a corresponding operation. The following is a detailed description.

The processing unit 502 is configured to send, by using the communication unit, sidestream data to the second device at a first time instant; and receiving, by the communication unit, feedback information for the sidestream data from the second device at a second time, the second time being within a continuous listening range of the first device.

In one possible example, the processing unit is further configured to: and switching to a continuous monitoring state.

In one possible example, in terms of said transition to the continuous listening state, said processing unit is specifically configured to: and switching to a continuous monitoring state after the sidestream data is sent.

In one possible example, in terms of said transition to the continuous listening state, said processing unit is specifically configured to: and opening a first timer after the sidestream data is sent, and switching to a continuous monitoring state under the condition that the first timer is overtime.

In one possible example, in terms of said transition to the continuous listening state, said processing unit is specifically configured to: and switching to a continuous monitoring state at a third moment after the first moment, wherein the duration between the first moment and the third moment is a duration N1.

In one possible example, the processing unit is further configured to: and opening a second timer after the data transmission starting time of the sidestream data, and stopping the continuous monitoring state when the second timer is overtime.

In one possible example, the processing unit is further configured to: and opening a second timer at the data transmission completion time of the sidestream data, and stopping the continuous monitoring state when the second timer is overtime.

In one possible example, in terms of opening the second timer after the data transmission start time of the sidestream data, the processing unit is specifically configured to: and opening a second timer at a fourth time after the first time.

In one possible example, the feedback information of the sidestream data is a negative acknowledgement NACK; the processing unit is further configured to: restarting the second timer.

In one possible example, the processing unit is further configured to: and restarting the second timer when retransmitting the sidestream data.

In one possible example, the feedback information of the sidestream data is a positive acknowledgement ACK; the processing unit is further configured to: stopping the second timer.

In one possible example, the processing unit is further configured to: and stopping the continuous monitoring state when the second timer is stopped and a third timer is overtime.

In one possible example, the processing unit is further configured to: and stopping the continuous monitoring state when the second timer is overtime and the third timer is overtime.

In one possible example, the feedback information of the sidestream data is a positive acknowledgement ACK; the processing unit is further configured to: stopping the continuous monitoring state.

In one possible example, the continuous listening state is stopped after receiving feedback information of the sidestream data.

In one possible example, the fourth timer is turned on or restarted when feedback information of the sidestream data is received, and continuous listening is performed before the fourth timer times out.

In one possible example, in said transmitting, by said communication unit, sidestream data to a second device at a first moment in time, said processing unit is specifically configured to: and selecting a first transmission resource, and transmitting the sidestream data to the second device through the communication unit by using the first transmission resource, wherein the time domain starting position of the first transmission resource is the first moment.

In case of integrated units, fig. 6 shows a block diagram of one possible functional unit composition of the DRX-based sidestream feedback apparatus involved in the above-mentioned embodiment. The DRX-based sidestream feedback apparatus 600 is applied to a second device including: a processing unit 602 and a communication unit 603. The processing unit 602 is configured to control and manage actions of the second device, for example, the processing unit 502 is configured to support a network device to perform related processes of the techniques described herein. The communication unit 603 is configured to support communication between the second device and other devices. The second device may further comprise a storage unit 601 for storing program code and data of the second device.

The processing unit 602 may be a processor or controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an Application-specific integrated circuit (ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 603 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 601 may be a memory. When the processing unit 602 is a processor, the communication unit 603 is a communication interface, and the storage unit 601 is a memory, the terminal according to the embodiment of the present application may be a second device shown in fig. 4.

The processing unit 602 is configured to receive, through the communication unit, sidestream data sent by a first device at a first time; and sending feedback information for the sidestream data to the first device through the communication unit, wherein the feedback information is received by the first device at a second moment, and the second moment is in a continuous monitoring range of the first device.

It can be understood that, since the method embodiment and the apparatus embodiment are different presentation forms of the same technical concept, the content of the method embodiment portion in the present application should be synchronously adapted to the apparatus embodiment portion, which is not described herein.

The embodiment of the application also provides a chip, wherein the chip comprises a processor, and the processor is used for calling and running a computer program from a memory, so that a device provided with the chip executes part or all of the steps described by the terminal in the embodiment of the method.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, and the computer program causes a computer to execute part or all of the steps described by the terminal in the embodiment of the method.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, and the computer program makes a computer execute part or all of the steps described by the network side device in the embodiment of the method.

Embodiments of the present application also provide a computer program product, wherein the computer program product comprises a computer program operable to cause a computer to perform some or all of the steps described by the terminal in the above method embodiments. The computer program product may be a software installation package.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (Random Access Memory, RAM), flash Memory, read Only Memory (ROM), erasable programmable Read Only Memory (Erasable Programmable ROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in an access network device, a target network device, or a core network device. It is of course also possible that the processor and the storage medium reside as discrete components in an access network device, a target network device, or a core network device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented, in whole or in part, in software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, a hard Disk, a magnetic tape), an optical medium (e.g., a digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The foregoing detailed description of the embodiments of the present application further illustrates the purposes, technical solutions and advantageous effects of the embodiments of the present application, and it should be understood that the foregoing description is only a specific implementation of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims

1. The sidestream feedback method based on Discontinuous Reception (DRX) is characterized by comprising the following steps:

the first device sends side line data to the second device at a first moment;

the first equipment is switched to a continuous monitoring state; the first device starts a second timer after the data transmission completion time or the data transmission start time of the sidestream data, and stops the continuous monitoring state when the second timer is overtime; the duration of the second timer is determined according to the maximum time interval between the side transmission resources which can be indicated in the side uplink control information SCI, or the duration of the second timer is determined according to the time interval between the side transmission resources which are indicated in the SCI and sent by the first device;

The first device receives feedback information for the sidestream data from the second device at a second moment, wherein the second moment is within a continuous monitoring range of the first device, and the continuous monitoring range refers to a time range in which the device is in a continuous monitoring state.

2. The method of claim 1, wherein the first device transitions to a continuous listening state comprising:

and the first equipment changes into a continuous monitoring state after sending the sidestream data.

3. The method of claim 1, wherein the first device transitions to a continuous listening state comprising:

and the first device starts a first timer after sending the sidestream data, and the first device is switched to a continuous monitoring state under the condition that the first timer is overtime.

4. A method according to claim 3, characterized in that the duration of the first timer is determined in accordance with the time interval between the transmission resources of the sidelink data and its corresponding physical sidelink feedback channel PSFCH.

5. The method of claim 1, wherein the first device transitions to a continuous listening state comprising:

And the first equipment is switched to a continuous monitoring state at a third moment after the first moment, and the duration between the first moment and the third moment is a duration N1.

6. The method of claim 5, wherein the duration N1 is determined based on a time interval between transmission resources of the sideline data and its corresponding PSFCH.

7. The method according to any of claims 2-6, wherein the continuous listening state is a first continuous listening state, the first continuous listening state being a continuous listening state determined from a first lateral DRX configuration parameter.

8. The method of claim 7, wherein the time ranges of the first continuous listening state and a second continuous listening state are different, the second continuous listening state being a continuous listening state determined from a second sidestream DRX configuration parameter, the first sidestream DRX configuration parameter being different from the second sidestream DRX configuration parameter.

9. The method of claim 1, wherein opening the second timer after the data transmission start time comprises:

the first device opens a second timer at a fourth time subsequent to the first time.

10. The method of claim 9, wherein a duration between the first time and the fourth time is a duration N2, the duration N2 being determined according to a time interval between transmission resources of the sidestream data and its corresponding PSFCH.

11. The method of claim 9, wherein the fourth time is a time when a first timer expires or wherein the fourth time is a next time slot when the first timer expires.

12. The method according to claim 1, wherein the feedback information of the sidestream data is a negative acknowledgement, NACK; the method further comprises the steps of:

the first device restarts the second timer.

13. The method according to claim 1, wherein the method further comprises:

and restarting the second timer when the first device retransmits the sidestream data.

14. The method of claim 1, wherein the feedback information of the sidestream data is a positive acknowledgement, ACK; the method further comprises the steps of:

the first device stops the second timer.

15. The method according to claim 1, wherein the method further comprises:

The first device stops the continuous listening state when the second timer stops and a third timer expires.

16. The method according to claim 1, wherein the method further comprises:

the first device stops the continuous listening state when the second timer times out and a third timer times out.

17. The method according to any of claims 1-6, wherein the feedback information of the sidestream data is a positive acknowledgement, ACK; the method further comprises the steps of:

the first device stops the continuous listening state.

18. The method according to any one of claims 1-6, further comprising:

and after receiving the feedback information of the sidestream data, the first device stops the continuous monitoring state.

19. The method according to any one of claims 1-6, further comprising:

and when the first equipment receives the feedback information of the sidestream data, opening or restarting a fourth timer, and continuously monitoring before the fourth timer is overtime.

20. The method of claim 1, wherein the continuous listening range is determined according to a first DRX parameter of the first device.

21. The method of claim 20, wherein the first device transmitting sidestream data to the second device at a first time instant, comprising:

and the first equipment selects a first transmission resource, the sidestream data is sent to the second equipment through the first transmission resource, and the time domain starting position of the first transmission resource is the first moment.

22. The method of claim 21, wherein the first transmission resource is within the continuous listening range and a time interval between a time domain start position of the first transmission resource and an end time of the continuous listening range is greater than or equal to a duration N3, wherein the duration N3 is determined based on a time interval between the first transmission resource and its corresponding PSFCH.

23. The method of claim 22, wherein the first device and the second device have the same DRX configuration information.

24. The method of claim 21, wherein the continuous listening range is [ T1, T2], wherein T1 is determined from the continuous listening range start time and T2 is determined from the continuous listening end time; the second moment is within the continuous listening range [ T1, T2 ].

25. The method of claim 24, wherein the time domain range of the first transmission resource is [ T1, T2], wherein the sidestream feedback information corresponding to sidestream data sent by the first device at time T1 is sent or received at time T1, and wherein the sidestream feedback information corresponding to sidestream data sent by the first device at time T2 is sent or received at time T2.

26. The method according to claim 24 or 25, wherein the first transmission resource is within a continuous listening range of the second device.

27. The method of any of claims 20-25, wherein the first device starts a fifth timer after receiving feedback information for the sidestream data from the second device at the second time instant, and is in a continuous listening state until the fifth timer expires.

28. The method of any of claims 1-6, wherein the sidestream data comprises first transmitted or retransmitted sidestream data.

29. A DRX-based sidestream feedback method, comprising:

the second equipment receives sidestream data sent by the first equipment at a first moment; the first equipment changes into a continuous monitoring state after sending the sidestream data; the first device starts a second timer after the data transmission finishing time or the data transmission starting time of the sidestream data, and stops the continuous monitoring state when the second timer is overtime; the duration of the second timer is determined according to the maximum time interval between the side transmission resources which can be indicated in the side uplink control information SCI, or the duration of the second timer is determined according to the time interval between the side transmission resources which are indicated in the SCI and sent by the first device;

The second device sends feedback information aiming at the sidestream data to the first device, the feedback information is received by the first device at a second moment, the second moment is in a continuous monitoring range of the first device, and the continuous monitoring range refers to a time range in which the device is in a continuous monitoring state.

30. The method of claim 29, wherein the continuous listening state is a first continuous listening state, the first continuous listening state being a continuous listening state determined from a first lateral DRX configuration parameter.

31. The method of claim 30, wherein the time ranges of the first continuous listening state and a second continuous listening state are different, the second continuous listening state being a continuous listening state determined from a second sidestream DRX configuration parameter, the first sidestream DRX configuration parameter being different from the second sidestream DRX configuration parameter.

32. The method of claim 29, wherein the continuous listening range is determined based on a first DRX parameter of the first device.

33. The method of claim 32, wherein the first time instant is a time domain start position of a first transmission resource selected by the first device.

34. The method of claim 33, wherein the first transmission resource is within the continuous listening range and a time interval between a time domain start position of the first transmission resource and an end time of the continuous listening range is greater than or equal to a duration N3, wherein the duration N3 is determined based on a time interval between the first transmission resource and its corresponding PSFCH.

35. The method of claim 34, wherein the first device and the second device have the same DRX configuration information.

36. The method of claim 33, wherein the continuous listening range is [ T1, T2], wherein T1 is determined from the continuous listening range start time and T2 is determined from the continuous listening end time; the second moment is within the continuous listening range [ T1, T2 ].

37. The method of claim 36, wherein the time domain range of the first transmission resource is [ T1, T2], wherein the sidestream feedback information corresponding to sidestream data sent by the first device at time T1 is sent or received at time T1, and wherein the sidestream feedback information corresponding to sidestream data sent by the first device at time T2 is sent or received at time T2.

38. The method according to claim 36 or 37, wherein the first transmission resource is within a continuous listening range of the second device.

39. The method of any of claims 29-37, wherein the sidestream data comprises first transmitted or retransmitted sidestream data.

40. A lateral feedback device based on DRX, applied to a first apparatus, comprising a processing unit and a communication unit, wherein,

the processing unit is used for sending side line data to the second equipment at the first moment through the communication unit; turning to a continuous monitoring state; and opening a second timer after the data transmission completion time or the data transmission start time of the sideline data, and stopping the continuous monitoring state when the second timer times out, wherein the duration of the second timer is determined according to the maximum time interval between sideline transmission resources which can be indicated in the sideline control information SCI, or the duration of the second timer is determined according to the time interval between sideline transmission resources which are indicated in the SCI sent by the first device; and receiving, by the communication unit, feedback information for the sidestream data from the second device at a second time, where the second time is within a continuous listening range of the first device, and the continuous listening range is a time range in which the device is in a continuous listening state.

41. The apparatus of claim 40, wherein in said transitioning to a continuous listening state, said processing unit is specifically configured to: and switching to a continuous monitoring state after the sidestream data is sent.

42. The apparatus of claim 40, wherein in said transitioning to a continuous listening state, said processing unit is specifically configured to: and opening a first timer after the sidestream data is sent, and switching to a continuous monitoring state under the condition that the first timer is overtime.

43. The apparatus of claim 42, wherein the duration of the first timer is determined based on a time interval between transmission resources of the sidelink data and its corresponding physical sidelink feedback channel, PSFCH.

44. The apparatus of claim 40, wherein in said transitioning to a continuous listening state, said processing unit is specifically configured to: and switching to a continuous monitoring state at a third moment after the first moment, wherein the duration between the first moment and the third moment is a duration N1.

45. The apparatus of claim 44, wherein the duration N1 is determined based on a time interval between transmission resources of the sideline data and its corresponding PSFCH.

46. The apparatus of any one of claims 40-45, wherein the continuous listening state is a first continuous listening state, the first continuous listening state being a continuous listening state determined from a first lateral DRX configuration parameter.

47. The apparatus of claim 46, wherein a time range of the first continuous listening state and a second continuous listening state is different, the second continuous listening state being a continuous listening state determined from a second sidestream DRX configuration parameter, the first sidestream DRX configuration parameter being different from the second sidestream DRX configuration parameter.

48. The apparatus of claim 40, wherein the processing unit is configured to, in particular, open a second timer after the data transmission start time: and opening a second timer at a fourth time after the first time.

49. The apparatus of claim 48, wherein a duration between the first time and the fourth time is a duration N2, the duration N2 being determined based on a time interval between transmission resources of the sidestream data and its corresponding PSFCH.

50. The apparatus of claim 48, wherein the fourth time is a time when a first timer expires or wherein the fourth time is a next time slot when the first timer expires.

51. The apparatus of claim 40, wherein the feedback information of the sidestream data is a negative acknowledgement, NACK; the processing unit is further configured to: restarting the second timer.

52. The apparatus of claim 40, wherein the processing unit is further configured to: and restarting the second timer when retransmitting the sidestream data.

53. The apparatus of claim 40, wherein the feedback information of the sidestream data is a positive acknowledgement, ACK; the processing unit is further configured to: stopping the second timer.

54. The apparatus of claim 40, wherein the processing unit is further configured to: and stopping the continuous monitoring state when the second timer is stopped and a third timer is overtime.

55. The apparatus of claim 40, wherein the processing unit is further configured to: and stopping the continuous monitoring state when the second timer is overtime and the third timer is overtime.

56. The apparatus according to any of claims 40-45, wherein the feedback information of the sidestream data is a positive acknowledgement, ACK; the processing unit is further configured to: stopping the continuous monitoring state.

57. The apparatus of any of claims 40-45, wherein the continuous listening state is stopped after receiving feedback information for the sidestream data.

58. The apparatus according to any of claims 40-45, wherein a fourth timer is turned on or restarted when feedback information for the sidestream data is received and continuous listening is performed before the fourth timer expires.

59. The apparatus of claim 40, wherein the continuous listening range is determined according to a first DRX parameter of the first device.

60. The apparatus of claim 59, wherein the processing unit is configured, in terms of the transmitting sidestream data to a second device at a first time by the communication unit, to: and selecting a first transmission resource, and transmitting the sidestream data to the second device through the communication unit by using the first transmission resource, wherein the time domain starting position of the first transmission resource is the first moment.

61. The apparatus of claim 60, wherein the first transmission resource is within the continuous listening range and a time interval between a time domain start position of the first transmission resource and an end time of the continuous listening range is greater than or equal to a duration N3, wherein the duration N3 is determined based on a time interval between the first transmission resource and its corresponding PSFCH.

62. The apparatus of claim 61, wherein the first device and the second device have the same DRX configuration information.

63. The apparatus of claim 60, wherein the continuous listening range is [ T1, T2], wherein T1 is determined from the continuous listening range start time and T2 is determined from the continuous listening end time; the second moment is within the continuous listening range [ T1, T2 ].

64. The apparatus of claim 63, wherein the time domain range of the first transmission resource is [ T1, T2], wherein sidestream feedback information corresponding to sidestream data transmitted by the first device at time T1 is transmitted or received at time T1, and wherein sidestream feedback information corresponding to sidestream data transmitted by the first device at time T2 is transmitted or received at time T2.

65. The apparatus of claim 63 or 64, wherein the first transmission resource is within a continuous listening range of the second device.

66. The apparatus of any of claims 59-64, wherein the first device starts a fifth timer after receiving feedback information for the sidestream data from the second device at the second time instant, and is in a continuous listening state until the fifth timer expires.

67. The apparatus of any one of claims 40-45, wherein the sidestream data comprises first transmitted or retransmitted sidestream data.

68. A lateral feedback device based on DRX, applied to a second apparatus, comprising a processing unit and a communication unit, wherein,

the processing unit is used for receiving sidestream data sent by the first equipment at a first moment through the communication unit; the first equipment changes into a continuous monitoring state after sending the sidestream data; the first device starts a second timer after the data transmission finishing time or the data transmission starting time of the sidestream data, and stops the continuous monitoring state when the second timer is overtime; the duration of the second timer is determined according to the maximum time interval between the side transmission resources which can be indicated in the side uplink control information SCI, or the duration of the second timer is determined according to the time interval between the side transmission resources which are indicated in the SCI and sent by the first device; and sending feedback information aiming at the sidestream data to the first device through the communication unit, wherein the feedback information is received by the first device at a second moment, the second moment is in a continuous monitoring range of the first device, and the continuous monitoring range refers to a time range of the device in a continuous monitoring state.

69. The apparatus of claim 68, wherein the continuous listening state is a first continuous listening state, the first continuous listening state being a continuous listening state determined from a first lateral DRX configuration parameter.

70. The apparatus of claim 69, wherein a time range of the first continuous listening state and a second continuous listening state is different, the second continuous listening state being a continuous listening state determined from a second sidestream DRX configuration parameter, the first sidestream DRX configuration parameter being different from the second sidestream DRX configuration parameter.

71. The apparatus of claim 68, wherein the continuous listening range is determined based on a first DRX parameter of the first device.

72. The apparatus of claim 71, wherein the first time instant is a time domain starting position of a first transmission resource selected by the first device.

73. The apparatus of claim 72, wherein the first transmission resource is within the continuous listening range and a time interval between a time domain start position of the first transmission resource and an end time of the continuous listening range is greater than or equal to a duration N3, wherein the duration N3 is determined based on a time interval between the first transmission resource and its corresponding PSFCH.

74. The apparatus of claim 73, wherein the first device and the second device have the same DRX configuration information.

75. The apparatus of claim 72, wherein the continuous listening range is [ T1, T2], wherein T1 is determined from the continuous listening range start time and T2 is determined from the continuous listening end time; the second moment is within the continuous listening range [ T1, T2 ].

76. The apparatus of claim 75, wherein the time domain range of the first transmission resource is [ T1, T2], wherein the sidestream feedback information corresponding to sidestream data transmitted by the first device at time T1 is transmitted or received at time T1, and wherein the sidestream feedback information corresponding to sidestream data transmitted by the first device at time T2 is transmitted or received at time T2.

77. The apparatus of claim 75 or 76, wherein the first transmission resource is within a continuous listening range of the second device.

78. The apparatus of any of claims 68-76, wherein the sidestream data comprises first transmitted or retransmitted sidestream data.

79. A first device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-28.

80. A second device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 29-39.

81. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 1-28 or 29-39.

82. A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-28 or 29-39.