CN112867176A

CN112867176A - Communication method, apparatus and storage medium

Info

Publication number: CN112867176A
Application number: CN202110055418.2A
Authority: CN
Inventors: 黄双红; 邢卫民; 卢有雄; 陈杰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-05-28
Also published as: WO2022152294A1

Abstract

The application provides a communication method, a device and a storage medium. The method comprises the following steps: receiving signals and/or channels in a SideLink receiving resource pool according to a first SL DRX mechanism; receiving signals and/or channels on resources comprised in a first set of resources if data is not successfully decoded on the first resource within the SideLink receive resource pool; the resources in the first set of resources are contained in the SideLink receive resource pool.

Description

Communication method, apparatus and storage medium

Technical Field

The present application relates to communications, and more particularly, to a communication method, apparatus, and storage medium.

Background

In the existing cellular communication, a Discontinuous Reception (DRX) mechanism is supported, and for a Radio Resource Control-CONNECTED (RRC _ CONNECTED) User Equipment (User Equipment, UE), if the DRX mechanism is configured, the UE is allowed to monitor a Physical Downlink Control Channel (PDCCH) discontinuously based on the DRX configuration, otherwise, the UE needs to monitor the PDCCH continuously. In the DRX mechanism, the UE may enter a sleep mode during the time that the PDCCH is not monitored; when monitoring the PDCCH is needed, the UE may wake up (wake up) from a sleep state, so that the UE achieves the purpose of power saving.

In Long Term Evolution (Long Term Evolution, LTE) V2X technology, in side link (SideLink) communication (for example, P2V transmission) in which a peer User (P-UE for short) participates, in order to save P-UE power consumption, when the P-UE selects a radio resource for transmitting a P2V service, a manner of Partial Sensing selection (Partial Sensing) is supported, for a resource included in a resource selection window [ n + T1, n + T2] ms, a resource at a position which is a positive integer multiple of P + T1 at a time P + T1 is a candidate Sensing resource in a time range [ n + T1-1000, n + T2-100] ms before the resource selection window, a resource actually performing Sensing is a part or all of the candidate Sensing resource, and is specifically determined according to a high-level configuration parameter.

Currently, the DRX mechanism is not supported in the SideLink communication, and if the DRX mechanism is introduced in the SideLink communication, the P-UE can be further helped to save power consumption. Meanwhile, the sideLink communication and the cellular communication are different in terms of resource selection, channel structure, retransmission mechanism and the like, that is, the DRX mechanism in the existing cellular communication cannot be reused for the sideLink communication, otherwise, the reliability of the sideLink communication is affected.

Disclosure of Invention

In view of this, embodiments of the present application provide a communication method, device and storage medium, which increase the probability of successfully receiving a signal or a channel, thereby improving the reliability of the SideLink communication.

The embodiment of the application provides a communication method, which is applied to a first communication node and comprises the following steps:

receiving signals and/or channels in a SideLink receiving resource pool according to a first SL DRX mechanism;

if the data is not successfully decoded on the first resource in the SideLink receiving resource pool, receiving signals and/or channels on the resource contained in the first resource set; the resources in the first set of resources are contained in the SideLink receive resource pool.

The embodiment of the application provides a communication method, which is applied to a second communication node and comprises the following steps:

selecting resources in a SideLink sending resource pool;

signals and/or channels are transmitted according to a first criterion.

The embodiment of the application provides a communication method, which is applied to a third communication node and comprises the following steps:

and at least sensing the resources in the sensing window contained in the third activation time corresponding to the third SL DRX mechanism.

An embodiment of the present application provides a communication device, including: a communication module, a memory, and one or more processors;

the communication module is configured to perform communication interaction between a first communication node and a second communication node;

the memory configured to store one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the method of any of the embodiments described above.

The embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and the computer program realizes the method of any one of the above embodiments when being executed by a processor.

Drawings

Fig. 1 is a flowchart of a communication method provided in an embodiment of the present application;

fig. 2 is a flowchart of another communication method provided in an embodiment of the present application;

fig. 3 is a flowchart of another communication method provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a data transmission provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of another data transmission provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of yet another data transmission provided by an embodiment of the present application;

fig. 7 is a block diagram of a communication device according to an embodiment of the present disclosure;

fig. 8 is a block diagram of another communication device according to an embodiment of the present disclosure;

fig. 9 is a block diagram of a further communication device according to an embodiment of the present disclosure;

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

Detailed Description

Hereinafter, embodiments of the present application will be described with reference to the drawings. The present application is described below with reference to the accompanying drawings of embodiments, which are provided for illustration only and are not intended to limit the scope of the present application.

In an embodiment, fig. 1 is a flowchart of a communication method provided in an embodiment of the present application. The present embodiment may be performed by a first communication node. Wherein the first communication node may be a terminal side (e.g., a user equipment). The first communication node is used as a receiving end of control information, a control channel or service data, that is, the first communication node is a receiving end corresponding to the second communication node. As shown in fig. 1, the present embodiment includes: S110-S120.

S110, receiving signals and/or channels in a SideLink receiving resource pool according to a first SL DRX mechanism.

S120, if the data is not successfully decoded on the first resource in the SideLink receiving resource pool, receiving signals and/or channels on the resource contained in the first resource set.

Wherein the resources in the first set of resources are contained in a SideLink receive resource pool. In the embodiment, a first SL DRX mechanism is configured or preconfigured for a first communication node, and a channel and/or a channel is received in a SideLink receiving resource pool according to the first SL DRX mechanism; if the data is not successfully decoded on the first resource in the SideLink receiving resource pool, the signal and/or the channel continues to be received on the resource in the first resource set in the SideLink resource pool to receive the data retransmitted by the second communication node, so that the probability that the SideLink data is successfully received by the first communication node is increased, and the reliability of SideLink communication is improved. In an embodiment, according to a first SL DRX mechanism, a signal and/or a channel is monitored in a sidlink receiving resource pool, or service data or a service channel is received; if the data is not successfully decoded on the first resource in the SideLink receiving resource pool, the signal and/or the channel is continuously monitored on the resource in the first resource set in the SideLink resource pool, or the service data or the service channel is received.

In an embodiment, the first set of resources includes resources that are located after the first resource. In one embodiment, the first set of resources includes resources including at least one of: candidate resources for SideLink transmission; candidate resources for forming a SideLink resource pool; and the resources belong to the SideLink resource pool. In the embodiment, the candidate resource for the sideLink transmission refers to a resource that can be used for the sideLink transmission, that is, a resource that may be used for forming a sideLink resource pool, or a resource that may not be used for forming the sideLink resource pool; the candidate resources used for forming the SideLink resource pool refer to resources which can be used for mapping the SideLink resource pool, namely, resources which may belong to the SideLink resource pool or resources which may not belong to the SideLink resource pool; the resource belonging to the SideLink resource pool may belong to a resource of the SideLink receiving resource pool or a resource of the sending resource pool.

In an embodiment, the state of the first SL DRX mechanism includes one of: a valid state; the state is enabled.

In an embodiment, the configuration information of the first SL DRX mechanism is obtained by at least one of: receiving network side configuration; according to a pre-configuration; receiving an indication of the other communication node; the communication node is defined autonomously; and (4) predefining. In the embodiment, receiving the network side configuration refers to receiving the configuration information of the network side, that is, obtaining the configuration information of the first SL DRX mechanism through the configuration information sent by the network side; according to the preconfiguration, the first communication node preconfigurates configuration information of a first SL DRX mechanism; receiving an indication of other communication nodes, namely obtaining configuration information of the first SL DRX mechanism through the indication information of other communication nodes; the communication node is autonomously defined, which means that a first communication node defines configuration information of a first SL DRX mechanism; predefined, refers to configuration information that predefines the first SL DRX mechanism.

In an embodiment, the first SL DRX mechanism is enabled to be in an active state by at least one of: according to the parameters configured by the network side; according to the pre-configuration parameters; according to the indication of the other communication node; according to the autonomous enablement of the communication node. In an embodiment, enabling the first SL DRX mechanism is to determine that configuration information or configuration parameters of the first SL DRX mechanism are in effect, and may also be understood as determining a time when the first communication node is in a sleep state (sleep mode) and in a wake up state (wake up) in the first SL DRX cycle, or a time when ON duration and Opportunity for DRX are in the first SL DRX cycle. In an embodiment, the first communication node may determine that the configuration information of the first SL DRX mechanism is valid according to the received parameter configured by the network side; or, the first communication node may determine that the configuration information of the first SL DRX mechanism is valid according to a preconfigured parameter; or, the first communication node may determine that the configuration information of the first SL DRX mechanism is valid according to the indication information of the other communication node; alternatively, the first communication node autonomously enables the configuration information of the first SL DRX mechanism to take effect. In an embodiment, it may be understood that the first SL DRX mechanism of the first communication node is active for its activation time, which is determined according to at least one of the following: network side configuration, pre-configuration, other communication node indication, communication node autonomous definition and predefinition.

In an embodiment, the first resource comprises at least one of:

the method comprises the steps that resources for carrying the SideLink transmission are contained in a SideLink receiving resource pool, and the SideLink transmission comprises one of the following steps: SideLink initial transmission and SideLink retransmission;

resources contained within a first active time, the first active time being determined according to parameters corresponding to a first SL DRX mechanism;

a resource for a SideLink transmission indicated by side Link control information (SCI), the SideLink transmission including one of: SideLink initial transmission and SideLink retransmission;

and resources contained in the second set of resources, wherein the resources in the second set of resources may be used for receiving signals and/or channels, and may be used for receiving signals and/or channels of initial transmission, and may also be used for receiving signals and/or channels of retransmission. In an embodiment, the resource in the second set of resources may be used for receiving a signal and/or a channel, which means that the resource in the second set of resources is used for listening to the signal and/or the channel, and may also receive traffic data (i.e. SideLink data)

In the embodiment, the initial transmission of the sideLink refers to the first transmission of the sideLink, that is, the first transmission of the service data packet of the sideLink.

In one embodiment, the second set of resources includes resources including at least one of: candidate resources for SideLink transmission; candidate resources for forming a SideLink resource pool; and the resources belong to the SideLink resource pool. In an embodiment, in case the first communication node fails to successfully decode data on resources comprised by the first set of resources, the first communication node may continue to receive signals and/or channels on resources comprised by the second set of resources. In an embodiment, the second set of resources may not be present if the first communication node successfully decodes data on the resources comprised in the first set of resources.

In an embodiment, the first set of resources further includes N most recent resources following the first resource, N being an integer, the count of N including at least one of: n candidate resources for SideLink transmission; n candidate resources used for forming a SideLink resource pool; n resources belonging to the SideLink resource pool. In an embodiment, the N candidate resources for the SideLink transmission refers to selecting N resources from candidate resources available for the SideLink transmission as resources in the first set of resources; the N candidate resources used for forming the SideLink resource pool refer to that N resources are selected from the candidate resources used for forming the SideLink resource pool and serve as the resources in the first resource set; the N resources belonging to the sideLink resource pool refer to selecting N resources from the resources belonging to the sideLink resource pool as the resources in the first set of resources. The candidate resources for the sideLink transmission, the candidate resources for forming the sideLink resource pool, and the resources belonging to the sideLink resource pool are explained in the above embodiments, and are not described herein again.

In one embodiment, the parameter N is determined by at least one of: receiving network side configuration information; acquiring pre-configuration information; according to the SCI indication; predefined, autonomously determined. In the embodiment, the first communication node determines a parameter N according to the received network side configuration information; or the first communication node determines a parameter N according to the acquired pre-configuration information; or the first communication node determines the parameter N according to the indication information of the SCI; or the first communication node determines parameter N according to a predefined; or the first communication node autonomously determines the parameter N.

In an embodiment, the determining of the number of resources contained in the first resource set according to the location of the retransmission resource reserved by the control information or the control channel indication includes:

a resource used for SideLink transmission from the first resource to the retransmission resource position;

the resource from the first resource to the retransmission resource position belongs to a SideLink resource pool;

the resource between the first resource and the retransmission resource position belongs to a SideLink receiving resource pool;

wherein the retransmission resource location comprises one of: a last retransmission resource location; resource location of any retransmission not exceeding the maximum transmission times; and retransmitting the resource location for the last time. In an embodiment, the first resource set does not include the first resource, and may include a resource at the retransmission resource location, or may not include a resource at the retransmission resource location.

In one embodiment, the signals and channels each include at least one of: physical Sidelink Control Channel (PSCCH); physical Sidelink Shared Channel (psch); SCI; first stage SCI (1)^st-stage SCI); second stage SCI (2)^nd-stage SCI). Wherein, SCI corresponds to LTE V2X; the first stage SCI and the second stage SCI correspond to NR V2X. The content and bearer channels contained in the first-stage SCI and the second-stage SCI are different.

In one embodiment, the unsuccessfully decoded data includes at least one of:

successfully decoding the SCI and unsuccessfully decoding service data corresponding to the SCI;

the SCI is not successfully decoded, and the service data corresponding to the SCI is not successfully decoded;

successfully decoding the first stage SCI, and unsuccessfully decoding service data corresponding to the first stage SCI;

successfully decoding the first stage SCI, and unsuccessfully decoding the second stage SCI and the service data corresponding to the first stage SCI;

successfully decoding the first-stage SCI and the corresponding second-stage SCI, and unsuccessfully decoding the service data corresponding to the first-stage SCI;

successfully decoding the PSCCH and unsuccessfully decoding the corresponding PSSCH;

on the reserved retransmission resources indicated by the SCI or the first-stage SCI, the service data is not successfully decoded;

on the reserved retransmission resources indicated by the SCI or the first-stage SCI, control information and/or service data are not detected;

non-acknowledgement NACK information is fed back.

In one embodiment, the resource comprises one of: time domain resources; frequency domain resources; time-frequency domain resources;

wherein the counting unit of the resource comprises at least one of the following: a subframe; a slot (slot); resource Block (RB); resource Element (RE); subband (subband). In an embodiment, one resource may include a time domain resource, a frequency domain resource, or both a time domain resource and a frequency domain resource.

In an embodiment, fig. 2 is a flowchart of another communication method provided in an embodiment of the present application. This embodiment may be performed by the second communication node. Wherein the second communication node may be a terminal side (e.g., a user equipment). The second communication node is used as a sending end of control information, a control channel or service data, that is, the second communication node is a sending end corresponding to the first communication node. As shown in fig. 2, the present embodiment includes: S210-S220.

S210, selecting resources in a SideLink sending resource pool.

And S220, transmitting signals and/or channels according to the first rule.

In an embodiment, the second communication node selects resources from a pool of SideLink transmission resources and transmits signals and/or channels according to a first criterion.

In one embodiment, the first criteria includes:

if the resource is outside the second activation time corresponding to the second SL DRX mechanism, processing according to at least one of the following modes:

if the signal and/or the channel sent on the resource is the initial transmission of the SideLink transmission, the signal and/or the channel sent on the resource is abandoned;

if the signal and/or channel sent on the resource is a retransmission of the SideLink transmission, the signal and/or channel is sent on the resource;

if NACK information is received, transmitting a signal and/or channel on the resource;

triggering re-evaluation or preemption evaluation;

triggering resource reselection;

triggering random selection of resources.

In an embodiment, triggering a re-evaluation or a preemption evaluation comprises: selecting resources from the resources contained in the Sidelink transmission resource pool for transmitting signals and/or channels in the second activation time;

triggering a resource reselection, comprising: according to the current resource selection mode, selecting resources from the resources contained in the Sildelink transmission resource pool in the second activation time for transmitting signals and/or channels;

triggering random selection of resources, comprising: and selecting resources from the resources contained in the Sildelink transmission resource pool for transmitting signals and/or channels in the second activation time. In an embodiment, triggering a re-evaluation refers to re-evaluating resources after pre-selecting them, before using them to transmit signals and/or channels; triggering preemption evaluation refers to judging whether a signal and/or a channel with higher priority than the signal and/or the channel needing to be sent currently occupies the corresponding preselected resource or not after the preselected resource and before the signal and/or the channel is sent by using the resource, and if so, reselecting the resource.

In the embodiment, if the resource selected by the second communication node from the sideLink sending resource pool is out of the range of the second activation time corresponding to the second SL DRX mechanism, the second communication node judges whether the signal and/or the channel to be sent is first transmitted, and if the signal and/or the channel to be sent is first transmitted, the second communication node directly abandons the transmission of the signal and/or the channel on the resource; and if the signal and/or the channel to be transmitted is the retransmission, transmitting the signal and/or the channel on the resource. In an embodiment, the second activation time may be the same as or different from the first activation time. In the case that the second activation time is the same as the first activation time, it is understood that the transmission of the signal and/or channel by the second communication node is completed within the same time range as the listening of the signal and/or channel by the first communication node.

In an embodiment, the configuration information of the second SL DRX mechanism is obtained by at least one of: receiving network side configuration; according to a pre-configuration; receiving an indication of the other communication node; the communication node is defined autonomously; and (4) predefining. In the embodiment, the explanation of the different obtaining manners of the configuration information of the second SL DRX mechanism refers to the description of the different obtaining manners of the configuration information of the first SL DRX mechanism in the above embodiment, which is not described herein again.

In an embodiment, the state of the second SL DRX mechanism includes one of: a valid state; the state is enabled. In an embodiment, the valid state or the enabled state of the second SL DRX mechanism both means that the configuration information or parameters corresponding to the second SL DRX mechanism are valid.

In an embodiment, the second SL DRX mechanism is enabled to be in an active state by at least one of: according to the parameters configured by the network side; according to the pre-configuration parameters; according to the indication of the other communication node; according to the autonomous enablement of the communication node. In an embodiment, enabling the second SL DRX mechanism in an active state refers to determining that configuration information or parameters of the second SL DRX mechanism are in effect. In the embodiment, for the explanation of the different ways of enabling the second SL DRX mechanism to be in the active state, see the description of enabling the first SL DRX mechanism to be in the active state in the above embodiments, which is not described herein again.

In an embodiment, the second active time is determined by configuration information of the second SL DRX mechanism.

In one embodiment, triggering the re-evaluation or pre-emption evaluation includes at least one of:

performing reevaluation processing or preemptive evaluation processing within a second activation time corresponding to a second SL DRX mechanism;

and performing reevaluation processing or preemptive evaluation processing in the SideLink sending resource pool.

In an embodiment, triggering the resource reselection comprises: according to the current resource selection mode, selecting resources from the resources contained in the SideLink sending resource pool in the second activation time for sending signals and/or channels;

triggering the random selection of resources includes: and selecting resources from the resources contained in the SideLink transmission resource pool in the second activation time for transmitting signals and/or channels.

wherein the counting unit of the resource comprises at least one of the following: a subframe; slot; RB; RE; subchannel. In an embodiment, one resource may include a time domain resource, a frequency domain resource, or both a time domain resource and a frequency domain resource.

In an embodiment, fig. 3 is a flowchart of another communication method provided in an embodiment of the present application. The present embodiment may be performed by a third communication node. Wherein the third communication node may be a terminal side (e.g., a user equipment). The third communication node is used as a sending end of control information, a control channel or service data, that is, the third communication node is a sending end corresponding to the first communication node. The third communication node and the second communication node may be the same user equipment or different user equipments. As shown in fig. 3, the present embodiment includes: and S310.

S310, at least sensing the resource in the sensing window included in the third activation time corresponding to the third SL DRX mechanism.

In an embodiment, before the third communication node selects a resource in the sidlink sending resource pool to transmit a signal and/or a channel, the third communication node senses the resource in the sensing window, and selects the resource for sending the signal and/or the channel in the resource selection window. In an embodiment, at least the resources contained within the sensing window contained within the third activation time range corresponding to the third SLDRX mechanism are sensed.

In an embodiment, the configuration information of the third SL DRX mechanism is obtained by at least one of: receiving network side configuration; according to a pre-configuration; receiving an indication of the other communication node; the communication node is defined autonomously; and (4) predefining. In the embodiment, the explanation of the different obtaining manners of the configuration information of the third SL DRX mechanism refers to the description of the different obtaining manners of the configuration information of the first SL DRX mechanism in the above embodiment, which is not described herein again.

In an embodiment, the state of the third SL DRX mechanism includes one of: a valid state; the state is enabled. In an embodiment, the valid state or the enabled state of the third SL DRX mechanism both means that the configuration information or the parameter corresponding to the third SL DRX mechanism is valid.

In an embodiment, the third SL DRX mechanism is enabled to be in an active state by at least one of: according to the parameters configured by the network side; according to the pre-configuration parameters; according to the indication of the other communication node; according to the autonomous enablement of the communication node. In an embodiment, enabling the third SL DRX mechanism is valid, which refers to determining that configuration information or parameters of the third SL DRX mechanism are valid. In the embodiment, for the explanation of the different ways of enabling the third SL DRX mechanism to be in the active state, see the description of enabling the first SL DRX mechanism to be in the active state in the above embodiments, which is not described herein again.

In an embodiment, the UE performs the sensing process ON resources within the sensing window at least at an active time (i.e., a third active time) or an ON duration in a third SL DRX cycle (i.e., a third SL DRX mechanism). In another embodiment, the UE performs sensing processing ON at least the effective resources included in the sensing window within the activation time or ON duration of the third SL DRX cycle, where the effective resources indicate resources belonging to the Sidelink transmission resource pool.

In an embodiment, selecting resources within a resource selection window for transmitting signals and/or channels based on the sensing results of the resources within the sensing window comprises at least one of:

triggering short-term sensing if no resource in the resource selection window has a sensing result in the corresponding sensing window; the short-term sensing resource refers to a resource which is behind a resource selection window and does not exceed the sensing resource between transmission delays of the sending data;

if no resource in the resource selection window has a sensing result in the corresponding sensing window, triggering random resource selection;

and if no resource in the resource selection window has a sensing result in the corresponding sensing window, reporting that the available resource set is empty.

triggering short-term sensing if the number of the resources contained in the resource selection window and having sensing results in the corresponding sensing window is less than the minimum number of the resources corresponding to the candidate resource set;

if the number of the resources contained in the resource selection window and having the sensing result in the corresponding sensing window is less than the minimum number of the resources corresponding to the candidate resource set, triggering random resource selection;

if the number of the resources contained in the resource selection window and having the sensing result in the corresponding sensing window is less than the minimum number of the resources corresponding to the candidate resource set, reporting that the available resource set is empty;

wherein the minimum number of resources in the candidate resource set is determined according to at least one of: configuration, pre-configuration, indication information, pre-definition. In an embodiment, the resources selected from the resource selection window are used for transmitting signals and/or channels. And determining a preferred resource set in the resource selection window based on the sensing result of the resources in the sensing window, wherein the preferred resource set is used for selecting the resources to transmit signals and/or channels. No resource in the resource selection window has a sensing result in the corresponding sensing window, and short-term sensing can be triggered, random resource selection can be triggered, or the available resource set can be reported to be empty. In the embodiment, the minimum number of resources corresponding to the candidate resource set refers to the minimum number of resources that need to be included in the candidate resource set, that is, the minimum number of resources that need to be included in the candidate resource set.

In one embodiment, the resource comprises one of: time domain resources; frequency domain resources; time-frequency domain resources; the units of counts of perceived resources include at least one of: subframe, slot, RB, RE, subband.

In an embodiment, taking the first communication node as the receiving end UE as an example, a listening and/or receiving process of signals and/or channels is described. In an embodiment, the receiving UE receives the SideLink control information and/or the traffic data based on the first SL DRX mechanism. If the first SL DRX mechanism is configured or preconfigured for the receiving UE (the first SL DRX mechanism may also be indicated by other UEs or autonomously triggered by the UE, for example, the first SL DRX mechanism is determined in a predefined manner), and is in an enabled state, the receiving UE monitors and/or receives PSCCH and/or pscsch on an active resource within a first activation time corresponding to the first SL DRX mechanism. For example, the receiving end UE monitors SCI of the Sidelink ON the resource included in the Sidelink reception resource pool within the ON duration (ON duration) of the SL DRX cycle; the UE then decodes the SideLink data (i.e., traffic data) according to the SCI. As another embodiment, the first active time described above includes a time allowed to monitor control and/or data in the SL DRX cycle, and the effective resources in the first active time include resources belonging to the SideLink reception resource pool in the first active time.

In an embodiment, a monitoring and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE, a first resource is a resource x, and a first resource set is a resource set Y. In an embodiment, the receiving end UE receives the SideLink control information and/or the traffic data based on the resources included in the SideLink reception resource pool within the active time (which may be referred to as a first active time) corresponding to the first SL DRX mechanism. On resource x, if the receiving end UE successfully decodes the SCI or PSCCH and fails to decode the corresponding service data (carried on the PSCCH), the receiving end UE monitors and/or receives the PSCCH and/or PSCCH on the resource included in the resource set Y, including but not limited to monitoring and/or receiving a retransmission of the PSCCH and/or PSCCH corresponding to the data that failed to decode. As another example, the resource set Y may be a resource set included in the fourth activation time and belonging to the Sidelink reception resource pool at the same time. As another example, the first SL DRX mechanism may be enabled or enabled.

Illustratively, fig. 4 is a schematic diagram of data transmission provided in an embodiment of the present application. As shown in fig. 4, the receiving end UE monitors the sidlink control information during the ON duration of the SL DRX cycle, and if the receiving end UE successfully decodes the SCI or PSCCH but does not successfully decode the sidlink data or PSCCH, activates a fourth activation time corresponding to the first SL DRX mechanism, and monitors and/or receives the sidlink control and/or traffic data in a resource set included in the fourth activation time, where the resource set includes resources belonging to a SideLink receiving resource pool. The sideLink control information and/or the service data include, but are not limited to, retransmission of the sideLink control information and/or the service data corresponding to the sideLink data that fails to be decoded, or new transmission of the sideLink control information and/or the service data corresponding to a new transport block.

In an embodiment, a monitoring and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE, a first resource is a resource x, and a first resource set is a resource set Y. In an embodiment, the receiving end UE monitors and/or receives the SideLink control information and/or the traffic data based on the resource included in the SideLink reception resource pool within the active time (which may be referred to as a first active time) corresponding to the first SL DRX mechanism. On resource x, if the receiving end UE successfully decodes the first stage SCI or PSCCH and fails to decode the corresponding traffic data, then the receiving end UE monitors and/or receives the PSCCH and/or PSCCH on the resources included in resource set Y, including but not limited to monitoring and/or receiving retransmission of the PSCCH and/or PSCCH corresponding to the data failed in decoding. As another example, the resource set Y may be a resource set included in the fourth activation time and belonging to the Sidelink reception resource pool at the same time. Also as another embodiment, the failure to decode the corresponding service data described above may further include a failure to decode the second-stage SCI. As another example, the first SL DRX mechanism may be enabled or enabled.

Illustratively, fig. 5 is a schematic diagram of another data transmission provided in the embodiment of the present application. As shown in fig. 5, the receiving end UE monitors the sidlink control information during the ON duration of the SL DRX cycle, and if the receiving end UE successfully decodes the first phase SCI or PSCCH but does not successfully decode the sidlink data or PSCCH, activates a fourth activation time corresponding to the first SL DRX mechanism, and monitors and/or receives the sidlink control and/or traffic data in a resource set included in the fourth activation time, where the resource set includes resources belonging to a SideLink receiving resource pool. The sideLink control information and/or the service data include, but are not limited to, retransmission of the sideLink control information and/or the service data corresponding to the sideLink data that fails to be decoded, or new transmission of the sideLink control information and/or the service data corresponding to a new transport block.

In an embodiment, a monitoring and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE, a first resource is a resource x, and a first resource set is a resource set Y. In an embodiment, the receiving end UE monitors and/or receives the SideLink control information and/or the traffic data based on the resource included in the SideLink reception resource pool within the active time (which may be referred to as a first active time) corresponding to the first SL DRX mechanism. On resource x, if the receiving end UE successfully decodes the first-stage SCI or PSCCH and the second-stage SCI and fails to decode the traffic data, the receiving end UE monitors and/or receives the PSCCH and/or PSCCH on the resources included in the resource set Y, including but not limited to monitoring and/or receiving retransmission of the PSCCH and/or PSCCH corresponding to the data failed in decoding. As another example, the resource set Y may be a resource set included in the fourth activation time and belonging to the Sidelink reception resource pool at the same time. As another example, the first SL DRX mechanism may be enabled or enabled.

Illustratively, fig. 6 is a schematic diagram of still another data transmission provided in the embodiment of the present application. As shown in fig. 6, the receiving end UE monitors the sidlink control information at the ON duration of the SL DRX cycle, decodes the first-stage SCI or PSCCH and the second-stage SCI successfully, but does not decode the sidlink data or PSCCH successfully, activates the fourth activation time of the second SL DRX mechanism, and monitors and/or receives the sidlink control and/or traffic data in the resource set included in the fourth activation time, where the resource set includes resources belonging to the SideLink receiving resource pool. The sideLink control information and/or the service data include, but are not limited to, retransmission of the sideLink control information and/or the service data corresponding to the sideLink data that fails to be decoded, or new transmission of the sideLink control information and/or the service data corresponding to a new transport block.

In an embodiment, a monitoring and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE, a first resource is a resource x, and a first resource set is a resource set Y. In an embodiment, the receiving end UE monitors and/or receives the SideLink control information and/or the traffic data based on the resource included in the SideLink reception resource pool within the active time (which may be referred to as a first active time) corresponding to the first SL DRX mechanism. On resource x, if the receiving end UE fails to decode the traffic data, the PSCCH and/or PSCCH is monitored and/or received on the resource included in resource set Y, including but not limited to monitoring and/or receiving retransmission of the PSCCH and/or PSCCH corresponding to the data that fails to decode. As another example, the resource set Y may be a resource set included in the fourth activation time and belonging to the Sidelink reception resource pool at the same time. As another example, the first SL DRX mechanism may be enabled or enabled.

In an embodiment, a monitoring and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE, a first resource is a resource x, and a first resource set is a resource set Y. In an embodiment, the receiving end UE monitors and/or receives the SideLink control information and/or the traffic data based on the resource included in the SideLink reception resource pool within the active time (which may be referred to as a first active time) corresponding to the first SL DRX mechanism. On resource x, if the receiving end UE fails to decode the service data, the UE feeds back NACK information, where the feedback includes feeding back to the network side or feeding back to the UE that sends the SideLink control information and/or the service data, and monitors and/or receives the PSCCH and/or the PSCCH on resources included in the resource set Y, including but not limited to monitoring and/or receiving retransmission of the PSCCH and/or PSCCH corresponding to data that fails to decode. As another example, the resource set Y may be a resource set included in the fourth activation time and belonging to the Sidelink reception resource pool at the same time. As another example, the first SL DRX mechanism may be enabled or enabled.

In an embodiment, a listening and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE and taking a first resource set as a resource set Y as an example. In an embodiment, if the receiving UE does not monitor and/or receive the sidlink control information and/or the traffic data on the reserved retransmission resources, the receiving UE monitors the PSCCH and/or the PSCCH on the resources included in the resource set Y. As another example, the resource set Y may be a resource set included in a fourth activation time and belonging to the sidlink receiving resource pool, wherein the fourth activation time corresponds to the first SL DRX mechanism. As another example, the first SL DRX mechanism may be enabled or enabled. Also as another embodiment, if the receiving-end UE does not monitor and/or receive the SideLink control information and/or the service data on the reserved retransmission resources, the receiving-end UE feeds back NACK information, where the feedback includes feedback to the network side or feedback to the UE that sends the SideLink control information and/or the service data.

In an embodiment, a listening and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE and taking a first resource set as a resource set Y as an example. In an embodiment, if the receiving end UE fails to decode the sidlink control information and/or the traffic data on the reserved retransmission resources, the receiving end UE monitors and/or receives the PSCCH and/or the PSCCH on resources included in the resource set Y, including but not limited to monitoring and/or receiving retransmissions corresponding to the sidlink control information and/or the traffic data that have failed in decoding. As another example, the resource set Y may be a resource set included in a fourth activation time and belonging to the sidlink receiving resource pool, wherein the fourth activation time corresponds to the first SL DRX mechanism. As another example, the first SL DRX mechanism may be enabled or enabled. Also as another embodiment, if the receiving-end UE fails to decode the SideLink control information and/or the service data on the reserved retransmission resources, the receiving-end UE feeds back NACK information, where the feedback includes feedback to the network side or feedback to the UE that sent the SideLink control information and/or the service data.

In an embodiment, a listening and/or receiving process of signals and/or channels is described by taking a first communication node as a receiving end UE and taking a first resource set as a resource set Y as an example. In an embodiment, if the UE feeds back NACK (negative acknowledgement) information, the PSCCH and/or PSCCH is monitored and/or received on resources included in the resource set Y, including but not limited to retransmission of the PSCCH and/or PSCCH corresponding to the fed-back NACK information. As another example, the resource set Y may be a resource set included in the fourth activation time and belonging to the Sidelink reception resource pool at the same time.

In an embodiment, the first active time may be determined according to information of the first SL DRX mechanism, for example, the active time in the SL DRX cycle, or referred to as ON duration, or active time, determined according to configuration parameters may be used as the first active time. As another example, the first SL DRX mechanism may be enabled or enabled.

In one embodiment, resource x corresponds to a resource unit of at least one of one or more of: slot, subframe, RB, RE, subband Subchannel. As another example, the resource x may be a resource included in the pool of the SideLink reception resources during the first activation time.

In one embodiment, the resource set Y corresponds to resource units of at least one of one or more of the following: slot, subframe, RB, RE, subframe. As another example, the resource set Y may be a resource set included in the pool of SideLink reception resources during the first activation time.

In an embodiment, the fourth activation time may be a time corresponding to a group of slots or subframes, and the group of slots or subframes may be subframes or slots included in a sidlink resource pool (such as a sidlink receiving resource pool), and may be physically continuous or discontinuous. For example, the fourth activation time corresponds to N logical slots or logical subframes in the SideLink reception resource pool, such as N ═ 32; alternatively, the fourth activation time corresponds to M valid slots or valid subframes for the SideLink, for example, M ═ 100. Alternatively, the fourth activation time corresponds to K slots or subframes that may be used for Sidelink transmission, such as K-32. Alternatively, the fourth activation time corresponds to L slots or subframes that may belong to the Sidelink resource pool, for example, L ═ 40.

In one embodiment, the fourth activation time may be a time range corresponding to a counter count in a unit of time, such as seconds or milliseconds, from a start of the counter count to an end of the counter count. For the SideLink communication, communication processing is performed based on the effective resources in the time range, for example, the SideLink signal and/or channel receiving processing is performed on the resources belonging to the SideLink receiving resource pool in the time range. For example, if 8 slots belonging to the sidlink receiving resource pool are included in 20ms, the UE monitors PSCCH and/or PSCCH on the 8 slots belonging to the sidlink receiving resource pool within the activated 20 ms. As another embodiment, the time range may also be based on the time range corresponding to the sdl valid slot or the subframe count, for example, based on the time corresponding to the sdl valid slot or the subframe count K times, for example, K equals to 100; or the time range corresponding to the slot or subframe count in the sidlink resource pool, for example, the time range corresponding to L slot or subframe counts in the sidlink receiving resource pool, for example, L equals to 32.

In an embodiment, the fourth activation time may also be a set of resource sets, for example, a set of resources that may be used for the sideLink transmission, or a set of resources that may belong to the sideLink resource pool, or a set of resources that belong to the sideLink resource pool. For example, a set of 32 slots belonging to the SideLink reception resource pool may be physically continuous or discontinuous, such as discontinuous slot index numbers.

In an embodiment, a set of resources corresponding to the fourth activation time may be determined according to reserved resources, for example, according to a reserved resource location indicated by the SCI for the sidlink retransmission, and resources belonging to the sidlink receiving resource pool before the reserved resource location corresponding to the retransmission (which may include the reserved resource location of the retransmission) constitute a resource set corresponding to the fourth activation time, where the retransmission may be the latest retransmission, or may be any retransmission no greater than the number of retransmissions, or the resource location of the latest retransmission. In a specific example, the UE fails to decode the PSSCH on slot x, and according to the indication information corresponding to the SCI, the location of the next retransmission may be determined to be slot y, and 16 slots belonging to the SideLink receiving resource pool are included between slot (x +1) and slot y, so that the set of resources corresponding to the fourth activation time is the 16 slots.

In an embodiment, taking the second communication node as the sending end UE as an example, a process of selecting a resource is described. In an embodiment, the sending UE selects a resource in a SideLink transmission resource pool (including a single or multiple transmission resources) for transmitting the SideLink control information and/or the service data. For a SideLink transport block, the sending end UE selects resources from the resources belonging to the SideLink sending resource pool in the second activation time corresponding to the second SL DRX mechanism for sending SideLink control information and/or service data, including corresponding initial transmission and/or retransmission.

In an embodiment, taking the second communication node as the sending end UE as an example, a process of selecting a resource is described. In an embodiment, the sending UE selects a resource in a SideLink transmission resource pool (including a single or multiple transmission resources) for transmitting the SideLink control information and/or the service data. And if the resource selected for sending the SideLink control information and/or the service data is not in the second activation time range corresponding to the second SL DRX mechanism, the sending end UE gives up sending the corresponding SideLink control information and/or the service data on the resource.

In an embodiment, taking the second communication node as the sending end UE as an example, a process of selecting a resource is described. In an embodiment, the sending UE selects a resource in a SideLink transmission resource pool (including a single or multiple transmission resources) for transmitting the SideLink control information and/or the service data. If the resource selected for sending the SideLink control information and/or the service data is not within the second activation time corresponding to the second SL DRX mechanism, processing according to the following steps:

if the transmission of the SideLink control information and/or the service data corresponding to the resource is the initial transmission, the transmission of the corresponding SideLink control information and/or the service data on the resource is abandoned; and if the transmission of the SideLink control information and/or the service data corresponding to the resource is retransmission, transmitting the corresponding SideLink control information and/or the service data on the resource.

In an embodiment, taking the second communication node as the sending end UE as an example, a process of selecting a resource is described. In an embodiment, the sending UE selects a resource in a SideLink transmission resource pool (including a single or multiple transmission resources) for transmitting the SideLink control information and/or the service data. If the resource selected for sending the SideLink control information and/or the service data is not within the second activation time corresponding to the second SL DRX mechanism, processing according to at least one of the following:

triggering reevaluation check processing or triggering preemption check processing, and selecting resources from resources belonging to a SideLink sending resource pool within third activation time corresponding to a third SL DRX mechanism for sending SideLink control information and/or service data;

triggering resource reselection, and selecting resources from resources belonging to a SideLink sending resource pool within second activation time corresponding to a second SL DRX mechanism for sending SideLink control information and/or service data;

and triggering a random resource selection mode, and selecting resources from resources belonging to the SideLink sending resource pool within the second activation time corresponding to the second SL DRX mechanism for sending SideLink control information and/or service data.

In an embodiment, the second active time may be determined according to the information of the SL DRX, for example, the active time in the SL DRX cycle, or referred to as ON duration, or active time, determined according to the configuration parameter may be used as the second active time.

In an embodiment, fig. 7 is a block diagram of a communication device according to an embodiment of the present disclosure. The present embodiment is applied to the first communication node. As shown in fig. 7, the present embodiment includes: a first listener 410 and a second listener 420.

Wherein the first listener 410 is configured to receive signals and/or channels within one sidlink reception resource pool according to the first SL DRX mechanism.

A second listener 420 configured to receive signals and/or channels on resources comprised in the first set of resources if data is not successfully decoded on the first resource within the SideLink receive resource pool.

Wherein the resources in the first set of resources are contained in a SideLink receive resource pool.

In one embodiment, the first set of resources includes resources located after the first resource, including at least one of: candidate resources for SideLink transmission; candidate resources for forming a SideLink resource pool; and the resources belong to the SideLink resource pool.

In an embodiment, the configuration information of the first SL DRX mechanism is obtained by at least one of: receiving network side configuration; according to a pre-configuration; receiving an indication of the other communication node; the communication node is defined autonomously; and (4) predefining.

In an embodiment, the first SL DRX mechanism is enabled to be active by at least one of: according to the parameters configured by the network side; according to the pre-configuration parameters; according to the indication of the other communication node; enabled autonomously from the communication node.

In an embodiment, the first resource comprises at least one of:

a resource indicated by the SCI for SideLink transmission, the SideLink transmission including one of: SideLink initial transmission and SideLink retransmission;

resources contained within a second set of resources, wherein the second set of resources are used for receiving signals and/or channels.

In one embodiment, the second set of resources includes resources including at least one of: candidate resources for SideLink transmission; candidate resources for forming a SideLink resource pool; and the resources belong to the SideLink resource pool.

In an embodiment, the first set of resources further includes N most recent resources following the first resource, N being an integer, the count of N including at least one of: n candidate resources for SideLink transmission; n candidate resources used for forming a SideLink resource pool; n resources belonging to the SideLink resource pool.

In one embodiment, the parameter N is determined by at least one of: receiving network side configuration information; acquiring pre-configuration information; according to the SCI indication; and (4) predefining.

wherein the retransmission resource location comprises one of: a last retransmission resource location; resource location of any retransmission not exceeding the maximum transmission times; and retransmitting the resource location for the last time.

In one embodiment, the signals and channels each include at least one of: PSCCH; PSSCH; SCI; a first stage SCI; second stage SCI.

In one embodiment, the unsuccessfully decoded data includes at least one of:

NACK information is fed back.

In one embodiment, the resource comprises one of: time domain resources; frequency domain resources; time-frequency domain resources; wherein the counting unit of the resource comprises at least one of the following: a subframe; slot; RB; RE; sub-bands.

The communication apparatus provided in this embodiment is configured to implement the communication method in the embodiment shown in fig. 1, and the implementation principle and the technical effect of the communication apparatus provided in this embodiment are similar, and are not described herein again.

In an embodiment, fig. 8 is a block diagram of another communication device provided in an embodiment of the present application. The present embodiment is applied to the second communication node. As shown in fig. 8, the present embodiment includes: a selector 510 and a transmitter 520.

Wherein, the selector 510 is configured to select resources in a SideLink sending resource pool;

a transmitter 520 configured to transmit signals and/or channels according to a first criterion.

In one embodiment, the first criteria includes:

triggering re-evaluation or preemption evaluation;

triggering resource reselection;

triggering random selection of resources.

In an embodiment, the configuration information of the second SL DRX mechanism is obtained by at least one of: receiving network side configuration; according to a pre-configuration; receiving an indication of the other communication node; the communication node is defined autonomously; and (4) predefining.

In an embodiment, the state of the second SL DRX mechanism includes one of: a valid state; the state is enabled.

In an embodiment, the second SL DRX mechanism is enabled to be active by at least one of: according to the parameters configured by the network side; according to the pre-configuration parameters; according to the indication of the other communication node; according to the autonomous enablement of the communication node.

The communication apparatus provided in this embodiment is configured to implement the communication method in the embodiment shown in fig. 2, and the implementation principle and the technical effect of the communication apparatus provided in this embodiment are similar, and are not described herein again.

In an embodiment, fig. 9 is a block diagram of a communication device according to an embodiment of the present disclosure. The present embodiment is applied to the third communication node. As shown in fig. 9, the present embodiment includes: a sensor 610.

The sensor 610 is configured to sense at least resources within a sensing window included in a third activation time corresponding to the third SL DRX mechanism.

In an embodiment, the configuration information of the third SL DRX mechanism is obtained by at least one of: receiving network side configuration; according to a pre-configuration; receiving an indication of the other communication node; the communication node is defined autonomously; and (4) predefining.

In an embodiment, the state of the third SL DRX mechanism includes one of: a valid state; the state is enabled.

In an embodiment, the third SL DRX mechanism is enabled to be active by at least one of: according to the parameters configured by the network side; according to the pre-configuration parameters; according to the indication of the other communication node; according to the autonomous enablement of the communication node.

In an embodiment, the UE performs the sensing process ON resources within the sensing window, at least the active time or ON duration in the third SL DRX cycle. In another embodiment, the UE performs sensing processing ON at least the effective resources included in the sensing window within the activation time or ON duration of the third SL DRX cycle, where the effective resources indicate resources belonging to the Sidelink transmission resource pool.

triggering short-term sensing if no resource in the resource selection window has a sensing result in the corresponding sensing window;

if no resource in the resource selection window has a sensing result in the corresponding sensing window, reporting that the available resource set is empty;

if the number of the resources contained in the resource selection window and having the sensing result in the corresponding sensing window is less than the minimum number of the resources corresponding to the candidate resource set, reporting that the available resource set is empty; the short-term sensing resource refers to a resource which is behind a resource selection window and does not exceed the sensing resource between transmission delays of the sending data; the minimum number of resources corresponding to the candidate resource set is determined according to at least one of the following: configuration, pre-configuration, indication information, pre-definition.

The communication apparatus provided in this embodiment is configured to implement the communication method in the embodiment shown in fig. 3, and the implementation principle and the technical effect of the communication apparatus provided in this embodiment are similar, and are not described herein again.

Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 10, the present application provides an apparatus comprising: a processor 710, a memory 720, and a communication module 730. The number of the processors 710 in the device may be one or more, and one processor 710 is taken as an example in fig. 10. The number of the memories 720 in the device may be one or more, and one memory 720 is taken as an example in fig. 10. The processor 710, the memory 720 and the communication module 730 of the device may be connected by a bus or other means, as exemplified by the bus connection in fig. 10. In this embodiment, the device may be a terminal side (e.g., a user equipment).

The memory 720, which is a computer-readable storage medium, may be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the apparatus of any embodiment of the present application (e.g., the first receiver 410 and the second receiver 420 in the communication device). The memory 720 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like. Further, the memory 720 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 720 may further include memory located remotely from the processor 710, which may be connected to devices over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

A communication module 730 configured for communicative interaction with other synchronization nodes.

In the case where the communication device is a first communication node, the above-provided device may be configured to execute the communication method applied to the first communication node provided in any of the above-described embodiments, with corresponding functions and effects.

In the case where the communication device is a second communication node, the above-provided device may be configured to execute the communication method applied to the second communication node provided in any of the above-described embodiments, and has corresponding functions and effects.

In the case where the communication apparatus is a third communication node, the apparatus provided above may be configured to execute the communication method applied to the third communication node provided in any of the above embodiments, and has corresponding functions and effects.

Embodiments of the present application also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a communication method applied to a first communication node, the method including: receiving signals and/or channels in a SideLink receiving resource pool according to a first SL DRX mechanism; receiving signals and/or channels on resources comprised in a first set of resources if data is not successfully decoded on the first resource within the SideLink receive resource pool; the resources in the first set of resources are contained within a SideLink receive resource pool.

Embodiments of the present application also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a communication method applied to a second communication node, the method including: selecting resources in a SideLink sending resource pool; signals and/or channels are transmitted according to a first criterion.

Embodiments of the present application also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a communication method applied to a third communication node, the method including: and at least sensing the resources in the sensing window contained in the third activation time corresponding to the third SL DRX mechanism.

It will be clear to a person skilled in the art that the term user equipment covers any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers or vehicle-mounted mobile stations.

In general, the various embodiments of the application may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.

Embodiments of the application may be implemented by a data processor of a mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

Any logic flow block diagrams in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The Memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, Read-Only Memory (ROM), Random Access Memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disc (CD)), etc. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable to the local technical environment, such as but not limited to general purpose computers, special purpose computers, microprocessors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Programmable logic devices (FGPAs), and processors based on a multi-core processor architecture.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A communication method, applied to a first communication node, comprising:

receiving signals and/or channels in a side link SideLink receiving resource pool according to a first side link discontinuous receiving (SL DRX) mechanism;

2. The method of claim 1, wherein the first set of resources comprises resources that are located after the first resource, and wherein the method comprises at least one of:

candidate resources for SideLink transmission;

candidate resources for forming a SideLink resource pool;

and the resources belong to the SideLink resource pool.

3. The method of claim 1, wherein the state of the first SL DRX mechanism comprises one of: a valid state; the state is enabled.

4. The method of claim 1, wherein the configuration information of the first SL DRX mechanism is obtained by at least one of:

receiving network side configuration;

according to a pre-configuration;

receiving an indication of the other communication node;

the communication node is defined autonomously;

and (4) predefining.

5. The method of claim 4, wherein the first SL DRX mechanism is enabled to be active by at least one of:

according to the parameters configured by the network side;

according to the pre-configuration parameters;

according to the indication of the other communication node;

enabled autonomously from the communication node.

6. The method of claim 1, wherein the first resource comprises at least one of:

the method comprises the steps that the resource of the SideLink transmission is loaded in the SideLink receiving resource pool, and the SideLink transmission comprises one of the following steps: SideLink initial transmission and SideLink retransmission;

resources contained within a first active time, the first active time being determined according to parameters corresponding to the first SL DRX mechanism;

a resource indicated by the side link control information SCI for a SideLink transmission, the SideLink transmission comprising one of: SideLink initial transmission and SideLink retransmission;

7. The method of claim 6, wherein the second set of resources comprises resources including at least one of:

candidate resources for SideLink transmission;

candidate resources for forming a SideLink resource pool;

and the resources belong to the SideLink resource pool.

8. The method of claim 1, wherein the first set of resources further includes N nearest resources after the first resource, wherein N is an integer, and wherein N is counted in a manner that includes at least one of:

n candidate resources for SideLink transmission;

n candidate resources used for forming a SideLink resource pool;

n resources belonging to the SideLink resource pool.

9. The method of claim 8, wherein the parameter N is determined by at least one of:

receiving network side configuration information;

acquiring pre-configuration information;

according to the SCI indication;

and (4) predefining.

10. The method of claim 1, wherein the first set of resources comprises a number of resources determined according to a location of retransmission resources reserved by control information or a control channel indicator, and comprises:

the resource from the first resource to the retransmission resource position belongs to a SideLink receiving resource pool;

11. The method of claim 1, wherein the signal and the channel each comprise at least one of:

a physical side link control channel PSCCH;

a physical sidelink shared channel PSSCH;

side link control information SCI;

a first stage SCI;

second stage SCI.

12. The method of claim 1, wherein the unsuccessfully decoded data comprises at least one of:

successfully decoding SCI and unsuccessfully decoding service data corresponding to the SCI;

successfully decoding the first-stage SCI and unsuccessfully decoding service data corresponding to the first-stage SCI;

successfully decoding a first-stage SCI, and unsuccessfully decoding a second-stage SCI and service data corresponding to the first-stage SCI;

successfully decoding a first-stage SCI and a corresponding second-stage SCI, and unsuccessfully decoding service data corresponding to the first-stage SCI;

non-acknowledgement NACK information is fed back.

13. The method of any of claims 1 to 12, wherein the resource comprises one of: time domain resources; frequency domain resources; time-frequency domain resources;

wherein the count unit of the resource comprises at least one of: a subframe; a slot; a resource block RB; a Resource Element (RE); sub-bands.

14. A communication method, applied to a second communication node, comprising:

selecting resources in a SideLink sending resource pool;

signals and/or channels are transmitted according to a first criterion.

15. The method of claim 14, wherein the first criterion comprises:

if the signal and/or channel sent on the resource is the retransmission of the SideLink transmission, the signal and/or channel is sent on the resource;

transmitting the signal and/or channel on the resource if NACK information is received;

triggering re-evaluation or preemption evaluation;

triggering resource reselection;

triggering random selection of resources.

16. The method of claim 15, wherein the second activation time is determined by configuration information of the second SL DRX mechanism.

17. The method of claim 15, wherein triggering the re-evaluation or pre-emption evaluation comprises at least one of:

performing re-evaluation processing or preemptive evaluation processing within a second activation time corresponding to the second SL DRX mechanism;

18. The method of claim 15, wherein triggering the resource reselection comprises: according to the current resource selection mode, selecting resources from the resources contained in the SideLink sending resource pool in the second activation time for sending signals and/or channels;

triggering the random selection of resources includes: and selecting resources from the resources contained in the SideLink sending resource pool in the second activation time for sending signals and/or channels.

19. A communication method applied to a third communication node, comprising:

20. The method according to claim 19, wherein selecting resources within a resource selection window for transmitting signals and/or channels based on the sensing results for the resources within the sensing window comprises at least one of:

triggering short-term sensing if the number of resources contained in the resource selection window and having sensing results in the corresponding sensing window is less than the minimum number of resources corresponding to the candidate resource set;

reporting that the available resource set is empty if the number of the resources contained in the resource selection window and having the sensing result in the corresponding sensing window is less than the minimum number of the resources corresponding to the candidate resource set;

the short-term sensing resource refers to a resource which is behind a resource selection window and does not exceed the sensing resource between transmission delays of sending data; the minimum number of resources is determined according to at least one of: configuration, pre-configuration, indication information, pre-definition.

21. A communication device, comprising: a communication module, a memory, and one or more processors;

the memory configured to store one or more programs;

when executed by the one or more processors, cause the one or more processors to implement a method as claimed in any preceding claim.

22. A storage medium, characterized in that the storage medium stores a computer program which, when executed by a processor, implements the method according to any one of the preceding claims.