WO2022126318A1

WO2022126318A1 - Sidelink communication method and apparatus, and communication device and storage medium

Info

Publication number: WO2022126318A1
Application number: PCT/CN2020/136141
Authority: WO
Inventors: 赵群
Original assignee: 北京小米移动软件有限公司
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2022-06-23
Also published as: CN112640560A

Abstract

Provided are a sidelink communication method and apparatus, and a communication device and a storage medium, which relate to the technical field of mobile communications. The method is applied to a receiving terminal device and comprises: determining a first resource set, wherein the first resource set is part of a sidelink communication resource pool for transmitting a physical sidelink control channel (PSCCH); and detecting and receiving the PSCCH on the basis of the first resource set. This limits the position of a resource detected and received by a receiving terminal device, thereby saving energy during a sidelink of the receiving terminal device.

Description

Direct connection communication method, apparatus, communication device and storage medium

technical field

The present invention relates to the technical field of mobile communication, and in particular, to a direct-connection communication method, device, communication device and storage medium.

Background technique

With the development of a new generation of 5G mobile communication technology, the use of 5G NR (New Radio) technology in 3GPP Rel-16 has realized support for new services and scenarios such as IoV communication, such as fleet management, perception expansion, advanced driving, and remote driving.

However, the current 5G V2x technology mainly considers the communication between in-vehicle terminals, and not much consideration is given to the needs of terminal forms such as handheld terminals, such as the need for power saving, which affects the endurance of the terminal form of equipment.

SUMMARY OF THE INVENTION

The embodiment of the first aspect of the present invention proposes a direct connection communication method. The method is applied to a receiving terminal device and includes: determining a first resource set, where the first resource set belongs to a direct connection for transmitting a physical direct connection control channel PSCCH A portion in a communication resource pool; detecting and receiving PSCCH based on the first resource set.

Optionally, determining the first resource set includes any one or more of the following: determining the first resource set by receiving downlink signaling of the base station; determining the first resource set by pre-configuration; receiving other terminal equipment The sent direct connection control signaling determines the first resource set.

Optionally, the direct communication resource pool is a receiving resource pool.

Optionally, the determining the first resource set includes: determining part of the frequency domain subchannels in the direct connection communication resource pool; determining that the PSCCH resource positions in the part of the frequency domain subchannels belong to the first resource set and/or: determining a partial time unit in the direct communication resource pool; determining that the PSCCH resource position in the partial time unit belongs to the first resource set.

Optionally, the downlink signaling sent by the base station, or the direct connection control signaling sent by other terminal equipment, or the pre-configuration information includes at least one of the following: the starting position and frequency of the partial frequency domain subchannel; the number of domain subchannels; or, the starting position and subchannel interval of the partial frequency domain subchannel; or, the bitmap indicating the partial frequency domain subchannel; or, the starting position and period of the partial time unit; Or, a bitmap indicating the partial time unit.

Optionally, the method further includes: when a preset trigger condition is satisfied, detecting and receiving the PSCCH based on the first resource set.

Optionally, the preset trigger condition includes that the receiving terminal device is in an energy saving state; or, receiving a downlink signaling control message sent by a base station, where the downlink signaling control message is used to indicate the The receiving terminal device detects and receives the PSCCH based on the first resource set.

The embodiment of the second aspect of the present invention proposes a direct connection communication method. The method is applied to a sending terminal device and includes: determining a second resource set, where the second resource set belongs to a direct connection for transmitting a physical direct connection control channel PSCCH. The part in the communication resource pool; the direct connection communication resource selection is performed based on the second resource set.

Optionally, determining the first resource set includes any one or more of the following: determining the second resource set by receiving downlink signaling of the base station; determining the second resource set by pre-configuration; receiving other terminal equipment The sent direct connection control signaling determines the second resource set.

Optionally, the direct communication resource pool is a sending resource pool.

Optionally, the determining the second resource set includes: determining part of the frequency domain subchannels in the direct connection communication resource pool; determining that the PSCCH resource positions in the part of the frequency domain subchannels belong to the second resource set and/or: determining a partial time unit in the direct communication resource pool; determining that the PSCCH resource position in the partial time unit belongs to the second resource set.

Optionally, performing the selection of direct connection communication resources according to the second resource set includes: determining a candidate resource whose position of the corresponding PSCCH time-frequency resource belongs to the second resource set as a candidate resource in the candidate resource set; Candidate resources whose PSCCH time-frequency resource positions do not belong to the second resource set are excluded from the candidate resource set.

Optionally, the method further includes: when a preset trigger condition is satisfied, selecting a direct connection communication resource according to the second resource set.

Optionally, the preset trigger condition includes that the destination terminal to which the sending terminal device communicates is in an energy-saving state; or, receiving a downlink signaling control message sent by the base station, wherein the downlink signaling control message uses instructing the sending terminal device to select a direct connection communication resource based on the second resource set; the transmission type of the data to be sent belongs to a preset indication type.

Optionally, the second resource set is the same as the first resource set, or, the second resource set is a subset of the first resource set, where the first resource set is the detection sum of the receiving terminal equipment. A set of direct connection communication resources for receiving PSCCH.

The embodiment of the third aspect of the present invention provides a direct connection communication apparatus, the apparatus is applied to a receiving terminal device, and includes: a first determination module, configured to determine a first resource set, where the first resource set belongs to the transmission physical direct connection The part in the direct connection communication resource pool of the connection control channel PSCCH; the detection module is configured to detect and receive the PSCCH based on the first resource set.

The embodiment of the fourth aspect of the present invention provides a direct connection communication apparatus, the apparatus is applied to a sending terminal device, and includes: a second determination module, configured to determine a second resource set, where the second resource set belongs to the transmission physical direct connection A part in the direct connection communication resource pool of the connection control channel PSCCH; the selection module is configured to select the direct connection communication resource based on the second resource set.

An embodiment of a fifth aspect of the present invention provides a communication device, including a processor, a transceiver, a memory, and a computer program stored on the memory, where the processor runs the computer program to implement the implementation of the first aspect The direct communication method proposed by the example.

Embodiments of the sixth aspect of the present invention provide a communication device, including a processor, a transceiver, a memory, and a computer program stored on the memory, where the processor runs the computer program to implement the implementation of the second aspect The direct communication method proposed by the example.

Embodiments of the seventh aspect of the present invention provide a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute the first aspect or the second aspect The direct connection communication method proposed by the embodiment.

The direct connection communication method, device, communication device and storage medium proposed by the present invention have at least the following technical effects:

On the one hand, the location of the resources detected and received by the receiving terminal equipment is limited, and on the other hand, the transmitting terminal equipment can only communicate through a part of the PSCCH resource set, which realizes the energy saving of the terminal equipment during direct connection.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic flowchart of a direct connection communication method according to an embodiment of the present invention;

FIG. 2(a) is a schematic diagram of configuring frequency resources according to an embodiment of the present invention;

2(b) is a schematic diagram of configuring frequency resources according to another embodiment of the present invention;

Figure 2(c) is a schematic diagram of configuring frequency resources according to yet another embodiment of the present invention;

3 is a schematic flowchart of a direct connection communication method according to another embodiment of the present invention;

4 is a structural block diagram of a direct communication device according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of a direct communication device according to another embodiment of the present invention; and

FIG. 6 is a structural block diagram of a communication device according to an embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the related art, in the direct communication of the terminal equipment, whether it is the communication equipment of the receiving terminal equipment or the communication equipment of the transmitting terminal equipment, it is necessary to traverse the relevant channels in the resource pool to select an appropriate channel for communication connection, etc. The resources of the equipment are wasted.

In the embodiment of the present invention, the selection of the resource pool is limited, and matching channel resources are configured for the relevant terminal equipment. In the direct connection communication scenario, there is no need to traverse the relevant resources, thereby realizing the energy saving of the terminal equipment.

For the convenience of description, the following description will first focus on the receiving terminal device side in the direct connection communication, wherein the receiving terminal device may be a communication device acting as the recipient of a direct connection communication request in any direct connection scenario, and the communication device includes but does not Limited to smartphones, wearable terminal devices, etc.

FIG. 1 is a flowchart of a direct connection communication method provided according to an embodiment of the present invention, wherein the direct connection communication method includes:

Step 101: Determine a first resource set, where the first resource set belongs to a part of the direct connection communication resource pool for transmitting the physical direct connection control channel PSCCH.

Wherein, the direct connection communication resource pool in the embodiment of the present invention is a receiving resource pool, including receiving all time-frequency resources related to a direct connection request, and the like.

The first resource set in this embodiment is implemented based on a configuration mechanism, and is used to partition the resources of the receiving terminal device. In the communication process, for example, in R16NR sidelink, it is assumed that all terminal devices use the same sidelink spectrum bandwidth (Bandwidth Part, BWP), and a resource pool is defined on the BWP, and a terminal device can be configured with multiple resource pools at the same time; among them, the resource pool It is divided into sending (Transport, Tx) resource pool and receiving (Receive, Rx) resource pool. Wherein, the sending terminal device uses the time and frequency resources in the Tx resource pool to perform direct connection transmission, and the receiving terminal device receives the direct connection transmission in the Rx resource pool.

In this embodiment, in order to achieve energy saving of the terminal device, the effect of energy saving is achieved by limiting the bandwidth and/or times and/or time unit of the receiving terminal device to detect and receive the direct connection control channel in the resource pool.

Therefore, in this embodiment, it is determined that some physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) resource positions in the direct communication resource pool are the first resource set, and the PSCCH resource set is used to restrict the receiving terminal equipment from detecting and A small set of blind-checked resources at the time of reception avoids unnecessary complexity and energy consumption caused by traversing all resources in the resource pool.

Step 102: Detect and receive PSCCH based on the first resource set.

In this embodiment, the PSCCH is detected and received directly based on the first resource set, so as to avoid resource waste caused by traversing resources in all resource pools.

It should be noted that, in different application scenarios, the first resource set is configured in different ways, including at least one or more of the following examples:

Example one:

In this example, the first resource set is determined by receiving downlink signaling of the base station. That is, the relevant information representing the first resource set is configured in the downlink signaling of the base station, for example, the resource identifier, time-frequency location, etc. corresponding to the first resource set are directly configured.

Example two:

In this example, the first resource set is determined by pre-configuration. For example, when the receiving terminal device is outside the coverage of the cell, read the configuration information pre-written into the receiving terminal device to determine the first resource set; or, preconfigure the first resource set through a protocol, which may be the receiving terminal device For the communication protocol and the like during direct connection communication, the first resource set is preset through the protocol to limit the need for the receiving terminal device to monitor communication connection requests sent through other direct connection resources.

Example three:

In this example, the first resource set is determined by receiving direct connection control signaling sent by other terminal devices. In this example, the direct connection control signaling of other terminal equipment includes information indicating the configuration of the first resource set, so as to limit the need for the receiving terminal equipment to monitor communication connection requests sent through other direct connection resources.

To sum up, in the direct connection communication method according to the embodiment of the present invention, the receiving terminal device determines that the PSCCH resource positions of some physical direct connection control channels in the direct connection communication resource pool are the first resource set, and then detects and receives the PSCCH based on the first resource set. . Therefore, the position of the resource detected and received by the receiving terminal device is limited, and the energy saving of the receiving terminal device during direct connection is achieved.

In practical applications, in order to achieve energy saving for the direct connection communication of the receiving terminal device, the location of some physical direct connection control channel PSCCH resources is configured in the direct connection communication resource pool as the first resource set.

In different application scenarios, the manner of determining the first resource set is different.

In one embodiment, the first resource set may determine part of the frequency domain subchannels in the direct connection communication resource pool in the following manner, and determine that the PSCCH resource positions in the part of the frequency domain subchannels belong to the first resource set, and the first resource The set includes subchannel positions in the frequency domain.

In this example, when the first resource set is determined by receiving downlink signaling of the base station, or the first resource set is determined by pre-configuration, or the first resource set is determined by receiving direct connection control signaling sent by other terminal equipment, The downlink signaling sent by the base station, or the direct connection control signaling sent by other terminal equipment, or the pre-configuration information includes at least one of the following:

(1): The starting position of some frequency domain subchannels and the number of frequency domain subchannels. The number of sub-channels in the frequency domain can also be understood as the width of the frequency domain.

In this example, frequency domain resources belonging to the first resource set are configured for the receiving terminal device. The frequency domain resource is the starting position of some frequency domain sub-channels and the number of frequency domain sub-channels. For example, as shown in Figure 2(a), the direct communication resource pool includes 10 sub-channels (sub-channels). The third to fifth subchannels are used as the first resource set, that is, the blind detection resource set.

(2): The starting position and sub-channel spacing of sub-channels in the partial frequency domain. Among them, the sub-channel interval can be understood as the frequency domain interval.

In this example, frequency domain resources belonging to the first resource set are configured for the receiving terminal device. The frequency domain resource is the starting position and frequency domain interval of the frequency resource. For example, as shown in Figure 2(b), the direct communication resource pool includes 10 subchannels, starting from the first subchannel, and the interval is 4 subchannels. Four sub-channels {1, 4, 7, 10} are selected as the blind detection resource set, that is, the first resource set.

(3): A bitmap indicating part of the frequency domain sub-channels. In this example, the bitmap bits are used to mark frequency domain resources belonging to the first resource set in the direct connection communication resource pool.

In this embodiment, the first resource set corresponds to frequency domain resources. The frequency domain resources can be understood as bitmap bits. For example, as shown in Figure 2(c), the resource pool includes 10 sub-channels, and 10-bit bitmap bits are used to indicate whether each sub-channel belongs to the first resource set, that is, the first resource Set, wherein, 1 in the figure is the first resource set, 0 is not the first resource set (gray in the figure represents 1, white area represents 0).

Based on the above description, in this implementation, a part of the time-frequency resources in the direct connection communication resource pool is defined as a set of blind detection resources. Compared with the prior art, the receiving terminal equipment needs to perform detection and reception at all the time-frequency resource positions where PSCCH may appear in the direct connection communication resource pool, but now only the time-frequency resources where PSCCH may appear in the blind detection resource set can be performed. The detection and reception are carried out at the location, which reduces the resource consumption.

In one embodiment, the first resource set may be determined by: determining part of the time unit in the direct connection communication resource pool, determining that the PSCCH resource position in the part of the time unit belongs to the first resource set, and the first resource set includes time channel location on the domain.

In this embodiment, a time unit can be understood as a physical time unit or a logical time unit. For example, a set of all time units that may be used for direct transmission is defined, and the time units in the set of time units are sorted by time. Sorting is called logical time unit; or defines the set of all time units that include time-frequency resources in the directly connected resource pool as a logical time unit set. By defining a logical time unit, it can be ensured that the first resource set in each cycle includes the time-frequency resources of the direct connection transmission or the time-frequency resources of the direct connection resource pool.

Therefore, in order to locate the specific first resource set, the period start position and period are configured on the time unit of the direct communication resource pool, wherein, it is obvious that each period can be determined based on the period start position and period. Time unit, the time unit is used as the blind detection period.

(1): The starting position and period of the partial time unit.

Wherein, in some possible examples, the starting position can be obtained by pre-defining or configuring. For example, the starting position of the cycle is the preset time unit of the direct communication resource pool. For example, the first time unit of the resource pool in one SFN cycle (that is, the SFN is from 0 to the maximum value) is defined as the starting position of the cycle ;or,

The starting position of the period is the offset value of the preset time domain position of the direct connection communication resource pool, for example, the starting position of the given period is relative to the given time domain position (for example, the first slot of the frame whose SFN is 0). ) offset value.

(2) A bitmap indicating a partial time unit.

In this embodiment, the first resource set belonging to the time unit that can be used by the receiving terminal device for detection and reception within the bit-marking period of the bitmap is used, so that the time unit and the detection and reception resources are associated. In some possible examples, when the period is defined on a physical time unit, it is possible that a certain time unit in the blind detection resource set of a certain period does not include the time-frequency resources used for direct connection transmission or the direct connection resource pool. Time-frequency resources; at this time, the starting time unit can be mapped to the time unit to which the resource pool belongs by some prescribed method, for example, if a certain time unit belonging to the first resource set does not belong to the directly connected resource pool, then The first time unit after the time unit belonging to the direct communication resource pool belongs to the first resource set.

Which time units in the period belong to the first resource set may be represented by bitmap bits, and the length of the bitmap bits may be less than or equal to the length of the period. Each bit in the bitmap bits indicates whether a time unit belongs to the first resource set. The bits of the bitmap can cycle through the cycle until the entire cycle is covered.

That is, in some possible examples, the length of the bitmap is equal to the length of the cycle, wherein each bit of the bitmap indicates whether each time unit in the cycle belongs to the first resource set of time units that can be used by the receiving terminal device for detection and reception. .

In some other possible examples, the length of the bitmap is less than the length of the period, wherein the bitmap circulates in the period, indicating whether each time unit of the whole period belongs to the first resource set of the time unit available for the terminal device to detect and receive .

To sum up, in the direct-connection communication method according to the embodiment of the present invention, a part of the time-frequency resources in the direct-connection communication resource pool is defined as a set of blind detection resources. Compared with the prior art, the receiving terminal equipment needs to perform detection and reception at all the time-frequency resource positions in the resource pool where PSCCH may appear, but now it can only perform detection and reception at the time-frequency resource positions where PSCCH may appear in the first resource set. Detection and reception reduce resource consumption and save energy when receiving terminal equipment is directly connected.

In practical applications, in order to achieve energy saving when receiving a direct connection of a terminal device, a first resource set of a physical direct connection control channel is configured in the resource pool, wherein the part of the physical direct connection control channel PSCCH is configured in the communication resource pool. The first resource set includes a PSCCH detection and reception resource set configured in the Rx resource pool, that is, the first resource set.

For the configuration method of the first resource set, reference may be made to any embodiment of the present disclosure, which is not limited in the embodiment of the present disclosure, and details are not described herein again.

In this embodiment, when the first resource set is configured in the resource pool, the terminal device performs PSCCH detection and reception at the time-frequency resource positions where the PSCCH may appear in the set, in order to further realize the energy saving of the direct connection of the receiving terminal device , to prevent the receiving terminal equipment from performing PSCCH detection and reception at the possible positions of all PSCCHs in the resource pool. In this embodiment, other conditions that need to be satisfied can be set, and only when the conditions are satisfied, the receiving terminal equipment detects in the first resource set. and receive PSCCH.

When part of the first resource set of the physical direct connection control channel PSCCH is configured in the direct connection communication resource pool, the PSCCH is detected and received at the time-frequency resource position in the first resource set.

Wherein, before the detection and reception, it is detected whether a preset trigger condition is satisfied, and when the trigger condition is satisfied, the PSCCH is detected and received based on the first resource set.

It should be noted that in different application scenarios, the preset trigger conditions are different. The following describes how to detect whether the preset trigger conditions are met in combination with different trigger conditions:

Example one:

In this example, it is detected whether the receiving terminal device is in an energy-saving state, and when the receiving terminal device enters the energy-saving state, it is considered that a preset trigger condition is satisfied, wherein the energy-saving state can be determined according to the current state information of the receiving terminal device, for example, When the state information includes the remaining power, it can be detected whether the terminal device is in an energy-saving state by detecting the remaining power of the receiving terminal device, wherein when the remaining power is less than a preset threshold, it can be considered that the receiving terminal device is in an energy-saving state.

For another example, when the state information is the state mode in which the receiving terminal device is located, it is possible to detect whether the receiving terminal device is in an energy-saving state by detecting the state mode that the receiving terminal device is currently in. set etc.

Example two:

In this example, it is detected whether the terminal device receives the downlink control signaling sent by the base station, and when it receives the downlink control signaling sent by the base station, it is considered that the preset trigger condition is satisfied, wherein the downlink signaling message includes an enabling indication, The indication may be in the form of a flag bit, or in the form of a text, etc., which will not be repeated here, where enabling means that the receiving terminal device detects and receives the PSCCH based on the first resource set to save energy; of course, in other possible examples , the downlink signaling message may further include a disabling indication, where disabling indicates that the receiving terminal device does not perform energy saving by detecting and receiving the PSCCH based on the first resource set. In addition, the downlink control signaling of the base station includes physical layer control information, MAC layer control information, and RRC layer control information, etc.

For example, the receiving terminal device receives the base station downlink control information signaling (Downlink control information, DCI), MAC layer CE (control element) or radio resource control (Radio Resource Control, RRC) signaling sent by the base station. The corresponding signaling includes an indication of whether the terminal device uses this method to save energy.

To sum up, in the direct connection communication method of the embodiment of the present invention, other conditions that need to be satisfied are set, and only when the conditions are satisfied, the receiving terminal equipment detects and receives the PSCCH based on the first resource set, thereby further realizing the energy saving of the direct connection of the receiving terminal equipment. , to prevent the receiving terminal equipment from performing PSCCH detection at the positions where all PSCCHs in the resource pool may appear.

For ease of description, the following description will focus on the side of the sending terminal device in the direct connection communication. The sending terminal device may be a communication device that acts as the sender of a communication request in any direct connection scenario, and the communication device includes but is not limited to Smartphones, wearable terminal devices, etc.

3 is a flowchart of a direct-connection communication method provided according to an embodiment of the present invention, wherein the direct-connection communication method includes:

Step 301: Determine a second resource set, where the second resource set belongs to a part of the direct communication resource pool for transmitting the physical direct connection control channel PSCCH.

Wherein, the direct connection communication resource pool in the embodiment of the present invention is a sending resource pool, including all time-frequency resources for sending a direct connection request, and the like.

The second resource set in this embodiment is implemented based on a configuration mechanism.

In this embodiment, the second time-frequency resource set of the sending terminal device corresponds to the first time-frequency resource set of the receiving terminal device, by ensuring that the PSCCH transmission corresponding to the selected direct communication transmission resource is used when resources are selected. The frequency resources are located within the detection and reception range of the receiving terminal equipment to ensure that the PSCCH sent by the transmitting terminal equipment can be correctly detected and received by the receiving terminal equipment.

In one embodiment, the second resource set may be the same as the first resource set, or may be a subset of the first resource set.

Step 302, select a direct connection communication resource based on the second resource set.

In this embodiment, the sending terminal device needs to consider the second resource set when selecting direct connection communication resources. The transmission time-frequency position corresponding to the time-frequency resource selected for direct connection transmission should belong to the second resource set.

In the existing NR SL communication, the sending terminal device constructs a candidate resource set from all the resources in the resource selection window that may be used for direct connection transmission, and then excludes the resources that may be interfered with according to the monitoring result, and then selects the remaining candidate resources from the resource set. to select a transport resource.

In some possible embodiments, only candidate resources whose corresponding time-frequency resource positions belong to the second resource set are determined as candidate resources in the candidate resource set. In some other possible embodiments, candidate resources whose corresponding time-frequency resource positions do not belong to the second resource set are excluded from the candidate resource set.

It should be noted that, in different application scenarios, the second resource set is configured in different ways. Examples are as follows:

Example one:

In this example, the second resource set is determined by receiving downlink signaling of the base station. That is, the relevant information representing the second resource set is configured in the downlink signaling of the base station, for example, the resource identifier, time-frequency location, etc. corresponding to the second resource set are directly configured. In order to limit the resource selection of the sending terminal device, it is ensured that the time-frequency resource position corresponding to the direct connection communication resource selected by the sending terminal device belongs to the second resource set, so as to ensure that the receiving terminal device can detect and receive the sending terminal device without traversing the resource pool. The transmitted PSCCH and its corresponding direct data transmission.

Example two:

In this example, the second set of resources is determined by pre-configuration. For example, when the sending terminal device is outside the coverage of the cell, read the configuration information pre-written into the sending terminal device to determine the second resource set; or, preconfigure the second resource set through a protocol, which may be the sending terminal device The communication protocol used in the direct connection communication, etc., the second resource set is preset through the protocol to limit the resource selection of the sending terminal device, and ensure that the PSCCH time-frequency resource position corresponding to the direct connection communication resource selected by the sending terminal device belongs to the second resource. set to ensure that the receiving terminal equipment can detect and receive the PSCCH and its corresponding direct connection data transmission sent by the transmitting terminal equipment without traversing the resource pool.

Example three:

In this example, the second resource set is determined by receiving direct connection control signaling sent by other terminal devices. In this example, the direct connection control signaling of other terminal equipment includes information indicating the configuration of the second resource set, so as to limit the resource selection of the transmitting terminal equipment and ensure the PSCCH time-frequency resources corresponding to the direct connection communication resources selected by the transmitting terminal equipment The location belongs to the second resource set, so as to ensure that the receiving terminal device can solicit, detect and receive the PSCCH and its corresponding direct connection data transmission sent by the sending terminal device without traversing the resource pool.

To sum up, in the direct connection communication method according to the embodiment of the present invention, the sending terminal device determines that part of the physical direct connection control channel PSCCH resource location in the direct connection communication resource pool is the second resource set, and further performs direct connection communication based on the second resource set Resource selection. Therefore, it is ensured that the PSCCH time-frequency resource position corresponding to the direct communication resource selected by the sending terminal device belongs to the second resource set, so as to ensure that the receiving terminal device can detect and receive the PSCCH and other PSCCH sent by the sending terminal device without traversing the resource pool. Corresponding direct connection data transmission.

In practical applications, in order to ensure that the PSCCH time-frequency resource position corresponding to the direct connection communication resource selected by the sending terminal device belongs to the second resource set, so as to ensure that the receiving terminal device can detect and receive the data sent by the sending terminal device without traversing the resource pool. For PSCCH and its corresponding direct connection data transmission, a part of physical direct connection control channel resource positions are configured in the direct connection communication resource pool as the second resource set of the sending terminal device.

In different application scenarios, the manner of determining the second resource set is different, including at least one or more of the following examples, the examples are as follows:

Case 1: Determine part of the frequency domain subchannels in the direct connection communication resource pool, and determine that the PSCCH resource positions in the part of the frequency domain subchannels belong to the second resource set, and the second resource set includes subchannel positions in the frequency domain.

In this example, when the second resource set is determined by receiving downlink signaling of the base station, or the first resource set is determined by pre-configuration, or the second resource set is determined by receiving direct connection control signaling sent by other terminal equipment, The downlink signaling sent by the base station, or the direct connection control signaling sent by other terminal equipment, or the pre-configuration information includes at least one of the following:

In this example, frequency domain resources belonging to the second resource set are configured for the sending terminal device. The frequency domain resource is the starting position of some frequency domain sub-channels and the number of frequency domain sub-channels. For example, as shown in Figure 2(a), the direct communication resource pool includes 10 sub-channels (sub-channels). The 3rd to 5th subchannels are used as the second resource set.

In this example, frequency domain resources belonging to the second resource set are configured for the sending terminal device. The frequency domain resource is the starting position and frequency domain interval of the frequency resource. For example, as shown in Figure 2(b), the direct communication resource pool includes 10 subchannels, starting from the first subchannel, and the interval is 4 subchannels. Four sub-channels of {1, 4, 7, 10} are selected as the second resource set.

(3): A bitmap indicating part of the frequency domain subchannels. In this example, the bitmap bits are used to mark the frequency domain resources belonging to the second resource set in the direct connection communication resource pool.

In this embodiment, the second resource set corresponds to frequency domain resources. The frequency domain resources can be understood as bitmap bits. For example, as shown in Figure 2(c), the resource pool includes 10 subchannels, and 10bit bitmap bits are used to indicate whether each subchannel belongs to the second resource set, that is, the second resource Set, wherein, 1 in the figure is the second resource set, and 0 is not the second resource set (the gray area in the figure represents 1, and the white area represents 0).

Based on the above description, in this implementation, a part of the time-frequency resources in the direct connection communication resource pool is defined as the second resource set. Compared with the prior art, the sending terminal device needs to select all the time-frequency resource positions in the direct communication resource pool that can send PSCCH, but now it can only select the time-frequency resource positions in the second resource set that may send PSCCH. Make choices and reduce resource consumption.

Case 2: Determine part of time units in the direct connection communication resource pool, determine that the PSCCH resource locations in the part of time units belong to a second resource set, and the second resource set includes channel locations in the time domain.

In this embodiment, a time unit can be understood as a physical time unit or a logical time unit. For example, a set of all time units that may be used for direct transmission is defined, and the time units in the set of time units are sorted by time. Sorting is called logical time unit; or defines the set of all time units that include time-frequency resources in the directly connected resource pool as a logical time unit set. By defining a logical time unit, it can be ensured that the second resource set in each period includes the time-frequency resources of the direct connection transmission or the time-frequency resources of the direct connection resource pool.

Therefore, in order to locate the specific second resource set, the period start position and period are configured on the time unit of the direct connection communication resource pool, wherein it is obvious that each period can be determined based on the period start position and period. time unit.

In this example, when the second resource set is determined by receiving downlink signaling of the base station, or the second resource set is determined by pre-configuration, or the second resource set is determined by receiving direct connection control signaling sent by other terminal equipment, The downlink signaling sent by the base station, or the direct connection control signaling sent by other terminal equipment, or the pre-configuration information includes at least one of the following:

(1): The starting position and period of the partial time unit.

(2) A bitmap indicating a partial time unit.

In this embodiment, the second resource set belonging to the time unit that can be used when the sending terminal device selects the direct connection communication resource within the bit-marking period of the bitmap is used. In some possible examples, when the period is defined on a physical time unit, it is possible that a certain time unit in the second resource set of a certain period does not include the time-frequency resources used for direct connection transmission or the direct connection resource pool. Time-frequency resources; at this time, the starting time unit can be mapped to the time unit to which the resource pool belongs by some prescribed method. For example, if a certain time unit belonging to the second resource set does not belong to the directly connected resource pool, then The first time unit after the time unit belonging to the direct communication resource pool belongs to the second resource set.

Which time units in the period belong to the second resource set may be represented by bitmap bits, and the length of the bitmap bits may be less than or equal to the length of the period. Each bit in the bitmap bits indicates whether a time unit belongs to the second set of resources. The bits of the bitmap can cycle through the cycle until the entire cycle is covered.

That is, in some possible examples, the length of the bitmap is equal to the length of the period, wherein each bit of the bitmap indicates whether each time unit in the period belongs to the second resource set of time units that can be used by the transmitting terminal device.

In other possible examples, the length of the bitmap is less than the length of the period, wherein the bitmap circulates within the period, indicating whether each time unit of the entire period belongs to the second resource set of time units available to the terminal device.

To sum up, in the direct connection communication method according to the embodiment of the present invention, a part of time-frequency resources in the direct connection communication resource pool is defined as the second resource set, and resource selection is performed according to the restriction of the second resource set. Compared with the prior art, the sending terminal device selects resources from all the candidate resources in the resource selection window, but now it needs to ensure that the time-frequency resource position of the PSCCH corresponding to the selected candidate resource is within the second resource set. . This ensures that the receiving terminal equipment can only select resources at limited PSCCH resource positions, realizes energy saving of the receiving terminal equipment, and ensures direct communication between the transmitting terminal equipment and the receiving terminal equipment.

In practical applications, in order to achieve energy saving when sending a direct connection of terminal equipment, a second resource set of physical direct connection control channels is configured in the resource pool, wherein the physical direct connection control channel PSCCH is configured in the communication resource pool. The second resource set includes configuring the second resource set in the Tx resource pool.

For the configuration method of the second resource set, reference may be made to any embodiment of the present disclosure, which is not limited in the embodiment of the present disclosure, and will not be repeated here.

In this embodiment, when the second resource set is configured in the resource pool, the sending terminal device selects resources at the time-frequency resource positions where the PSCCH may appear in the set to ensure that the direct connection communication resources selected by the sending terminal device correspond to The time-frequency resource location belongs to the second resource set to ensure that the receiving terminal equipment can detect and receive the PSCCH and its corresponding direct data transmission sent by the transmitting terminal equipment without traversing the resource pool. In this embodiment, other The conditions that need to be met, and only when the conditions are met, the terminal device selects resources on the second resource set.

When part of the second resource set of the physical direct-connection control channel is configured in the direct-connection communication resource pool, the direct-connection communication resource is selected at the time-frequency resource position in the second resource set.

Wherein, before selecting the direct connection communication resource, it is detected whether a preset trigger condition is satisfied, and when the trigger condition is satisfied, the direct connection communication resource selection is performed according to the second resource set.

Example one:

In this example, it is detected whether the destination terminal communicating with the sending terminal device is in an energy-saving state, and when the destination terminal communicating with the sending terminal device is in an energy-saving terminal, it is determined that a preset trigger condition is satisfied, wherein the energy-saving state can be based on the current state of the destination terminal. For example, when the status information includes the remaining power, it is possible to detect whether the terminal device is in an energy-saving state by detecting the remaining power of the destination terminal. When the remaining power is less than the preset threshold, it can be considered that the destination terminal enters the energy-saving state. state.

For another example, when the state information is the state mode in which the destination terminal is located, it can be detected whether the destination terminal is in an energy saving state by detecting the state mode currently in which the destination terminal is sent, wherein the state mode can be set by the user by triggering a relevant menu. Wait.

Example two:

In this example, it is detected whether the sending terminal device receives the downlink signaling control message sent by the base station, and when the sending terminal device receives the downlink signaling control message sent by the base station, it is determined that a preset trigger condition is satisfied, wherein the downlink signaling message includes The enable instruction, which may be in the form of a flag bit, or in the form of a text, etc., will not be repeated here, wherein, enable means that the sending terminal equipment performs transmission based on the PSCCH transmitted by the second resource set when communicating with other terminal equipment. Resource selection; of course, in some embodiments, the downlink signaling message may also include a disabling instruction, which indicates that the PSCCH that is transmitted based on the second resource set when the terminal device does not communicate with other terminal devices is sent. Make resource selection. In addition, the downlink control signaling of the base station includes physical layer control information, MAC layer control information and RRC layer control information.

For example, the sending terminal device receives base station downlink control information signaling (Downlink control information, DCI), MAC layer CE (control element) or radio resource control (Radio Resource Control, RRC) signaling sent by the base station. The corresponding signaling includes an indication of whether the target terminal equipment communicating with the sending terminal equipment uses this method to save energy.

Example three:

In this example, it is detected whether the data type to be sent belongs to the preset indication type, and when the data type to be sent belongs to the preset indication type, it is considered that the preset trigger condition is satisfied, wherein the preset indication type can be based on the needs of the scene The calibration, for example, may be a data indication type whose data size is greater than a preset size, or may be a data type in a preset format, and the like.

To sum up, in the direct connection communication method of the embodiment of the present invention, other conditions that need to be satisfied are set, and only when the conditions are satisfied, the sending terminal device selects the direct connection communication resource according to the second resource set. Therefore, it is ensured that the PSCCH time-frequency resource position corresponding to the direct connection communication resource selected by the sending terminal device belongs to the second resource set, so as to ensure that the receiving terminal device can detect and receive the PSCCH and other PSCCH sent by the sending terminal device without traversing the resource pool. Corresponding direct connection data transmission.

Corresponding to the direct connection communication methods on the receiving terminal equipment side provided by the above embodiments, the present invention also provides a direct connection communication apparatus on the receiving terminal equipment side. Corresponding to the direct connection communication method provided in this embodiment, therefore, the implementation of the direct connection communication method is also applicable to the direct connection communication device provided in this embodiment, and will not be described in detail in this embodiment.

FIG. 4 is a schematic structural diagram of a direct-connected communication device according to the present invention.

FIG. 4 is a schematic structural diagram of a direct-connected communication apparatus according to an embodiment of the present invention. The apparatus is applied to a receiving terminal device. As shown in FIG. 4 , the direct-connected communication apparatus includes: a first determination module 410 and a detection module 420 , wherein ,

a first determining module 410, configured to determine a first resource set, where the first resource set belongs to a part of the direct connection communication resource pool for transmitting the physical direct connection control channel PSCCH;

The detection module 420 is configured to detect and receive the PSCCH based on the first resource set.

To sum up, in the direct-connected communication apparatus according to the embodiment of the present invention, the receiving terminal device determines that the PSCCH resource positions of some of the physical direct-connected control channels in the direct-connected communication resource pool are the first resource set. PSCCH. Therefore, the position of the resource detected and received by the receiving terminal device is limited, and the energy saving of the receiving terminal device during direct connection is achieved.

Corresponding to the direct connection communication methods on the sending terminal equipment side provided by the above-mentioned embodiments, the present invention also provides a direct connection communication device on the sending terminal equipment side. Corresponding to the direct connection communication method provided in this embodiment, therefore, the implementation of the direct connection communication method is also applicable to the direct connection communication device provided in this embodiment, and will not be described in detail in this embodiment.

FIG. 5 is a schematic structural diagram of a direct-connected communication device according to the present invention.

FIG. 5 is a schematic structural diagram of a direct-connected communication apparatus according to an embodiment of the present invention. The apparatus is applied to a sending terminal device. As shown in FIG. 5 , the direct-connected communication apparatus includes: a second determination module 510 and a selection module 520 , wherein ,

The second determination module 510 is used to determine a second resource set, the second resource set belongs to the part in the direct connection communication resource pool that transmits the physical direct connection control channel PSCCH;

The selection module 520 is configured to select a direct connection communication resource based on the second resource set.

To sum up, in the direct connection communication apparatus according to the embodiment of the present invention, the sending terminal device determines that the PSCCH resource positions of some physical direct connection control channels in the direct connection communication resource pool are the second resource set, and further performs direct connection communication based on the second resource set. Resource selection. Therefore, it is ensured that the PSCCH time-frequency resource position corresponding to the direct connection communication resource selected by the sending terminal device belongs to the second resource set, so as to ensure that the receiving terminal device can detect and receive the PSCCH and other PSCCH sent by the sending terminal device without traversing the resource pool. Corresponding direct connection data transmission.

According to an embodiment of the present invention, the present invention also provides a communication device and a readable storage medium.

As shown in FIG. 6 , it is a block diagram of a communication device for direct communication according to an embodiment of the present invention. Communication devices are intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Communication devices may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are by way of example only, and are not intended to limit implementations of the inventions described and/or claimed herein.

As shown in FIG. 6, the communication device includes: one or more processors 601, a memory 602, and interfaces for connecting various components, including a high-speed interface and a low-speed interface. The various components are interconnected using different buses and may be mounted on a common motherboard or otherwise as desired. The processor may process instructions executed within the communication device, including instructions stored in or on memory to display graphical information of the GUI on an external input/output device, such as a display device coupled to the interface. In other embodiments, multiple processors and/or multiple buses may be used with multiple memories and multiple memories, if desired. Likewise, multiple communication devices may be connected, with each device providing some of the necessary operations (eg, as a server array, a group of blade servers, or a multi-processor system). A processor 601 is taken as an example in FIG. 6 .

The memory 602 is the non-transitory computer-readable storage medium provided by the present invention. Wherein, the memory stores instructions executable by at least one processor, so that the at least one processor executes the direct connection communication method provided by the present invention and applied to a sending terminal device or a receiving terminal device. The non-transitory computer-readable storage medium of the present invention stores computer instructions, and the computer instructions are used to cause the computer to execute the direct-connection communication method provided by the present invention.

As a non-transitory computer-readable storage medium, the memory 602 can be used to store non-transitory software programs, non-transitory computer-executable programs and modules, such as program instructions/modules corresponding to the direct communication method in the embodiment of the present invention. The processor 601 executes various functional applications and data processing of the server by running the non-transitory software programs, instructions and modules stored in the memory 602, that is, to implement the sending terminal device side or the receiving terminal device side in the above method embodiments. the direct communication method.

The memory 602 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 the use of the positioning communication device, and the like. Additionally, memory 602 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. Optionally, memory 602 may optionally include memory located remotely relative to processor 601, and these remote memories may be connected to the positioning communication device via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The communication device performing the direct communication method may further include: an input device 603 and an output device 604 . The processor 601 , the memory 602 , the input device 603 and the output device 604 may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 6 .

The input device 603 can receive input numerical or character information and generate key signal input related to user settings and functional control of the positioning communication device, such as a touch screen, keypad, mouse, trackpad, touchpad, pointing stick, one or more Input devices such as mouse buttons, trackballs, joysticks, etc. Output devices 604 may include display devices, auxiliary lighting devices (eg, LEDs), haptic feedback devices (eg, vibration motors), and the like. The display device may include, but is not limited to, a liquid crystal display (LCD), a light emitting diode (LED) display, and a plasma display. In some implementations, the display device may be a touch screen.

Various implementations of the systems and techniques described herein can be implemented in digital electronic circuitry, integrated circuit systems, application specific ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include being implemented in one or more computer programs executable and/or interpretable on a programmable system including at least one programmable processor that The processor, which may be a special purpose or general-purpose programmable processor, may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device an output device.

These computational programs (also referred to as programs, software, software applications, or codes) include machine instructions for programmable processors, and may be implemented using high-level procedural and/or object-oriented programming languages, and/or assembly/machine languages calculation program. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or apparatus for providing machine instructions and/or data to a programmable processor ( For example, magnetic disks, optical disks, memories, programmable logic devices (PLDs), including machine-readable media that receive machine instructions as machine-readable signals. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.

To provide interaction with a user, the systems and techniques described herein may be implemented on a computer having a display device (eg, a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user ); and a keyboard and pointing device (eg, a mouse or trackball) through which a user can provide input to the computer. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (eg, visual feedback, auditory feedback, or tactile feedback); and can be in any form (including acoustic input, voice input, or tactile input) to receive input from the user.

The systems and techniques described herein may be implemented on a computing system that includes back-end components (eg, as a data server), or a computing system that includes middleware components (eg, an application server), or a computing system that includes front-end components (eg, a user's computer having a graphical user interface or web browser through which a user may interact with implementations of the systems and techniques described herein), or including such backend components, middleware components, Or any combination of front-end components in a computing system. The components of the system may be interconnected by any form or medium of digital data communication (eg, a communication network). Examples of communication networks include: Local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.

A computer system can include clients and servers. Clients and servers are generally remote from each other and usually interact through a communication network. The relationship of client and server arises by computer programs running on the respective computers and having a client-server relationship to each other.

In the communication device according to the embodiment of the present invention, the physical direct connection control channel PSCCH resource set is configured in the resource pool, thereby, on the one hand, the position of the resource detected and received by the terminal device is restricted, and on the other hand, other direct connection with the terminal device is restricted. The connected terminal equipment can only communicate through the PSCCH resource set, which realizes the energy saving of the terminal equipment when it is directly connected.

It should be understood that steps may be reordered, added or deleted using the various forms of flow shown above. For example, the steps described in the present application can be performed in parallel, sequentially or in different orders, and as long as the desired results of the technical solutions disclosed in the present invention can be achieved, no limitation is imposed herein.

The above-mentioned specific embodiments do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

A direct-connection communication method, wherein the method is applied to a receiving terminal device, comprising:

determining a first resource set, where the first resource set belongs to a part of the direct connection communication resource pool for transmitting the physical direct connection control channel PSCCH;

PSCCH is detected and received based on the first set of resources.
The method according to claim 1, wherein determining the first resource set comprises any one or more of the following:

The first resource set is determined by receiving downlink signaling of the base station; the first resource set is determined by pre-configuration;

The first resource set is determined by receiving direct connection control signaling sent by other terminal devices.
The method according to claim 1, characterized in that:

The direct communication resource pool is a receiving resource pool.
The method according to claim 1, wherein the determining the first resource set comprises:

determining part of the frequency domain subchannels in the direct communication resource pool;

determining that the PSCCH resource position in the partial frequency domain subchannel belongs to the first resource set;

and / or;

determining part of the time unit in the direct communication resource pool;

It is determined that the PSCCH resource position in the partial time unit belongs to the first resource set.
The method according to claim 4, wherein the downlink signaling sent by the base station, or the direct connection control signaling sent by other terminal equipment, or the pre-configuration information includes at least one of the following:

the starting position of the partial frequency domain subchannels and the number of frequency domain subchannels; or,

the starting position and subchannel spacing of the partial frequency domain subchannel; or,

a bitmap indicating the partial frequency domain subchannel; or,

the starting position and period of the partial time unit; or,

A bitmap indicating the partial time unit.
The method of claim 1, further comprising:

When a preset trigger condition is satisfied, the PSCCH is detected and received based on the first resource set.
The method according to claim 6, wherein the preset trigger condition includes:

The receiving terminal device is in an energy saving state; or,

A downlink signaling control message sent by the base station is received, wherein the downlink signaling control message is used to instruct the receiving terminal device to detect and receive the PSCCH based on the first resource set.
A direct-connection communication method, wherein the method is applied to a sending terminal device, comprising:

determining a second resource set, where the second resource set belongs to a part of the direct connection communication resource pool for transmitting the physical direct connection control channel PSCCH;

The direct connection communication resource selection is performed based on the second resource set.
The method according to claim 8, wherein determining the first resource set comprises any one or more of the following:

determining the second resource set by receiving downlink signaling of the base station;

determining the second resource set by pre-configuration;

The second resource set is determined by receiving direct connection control signaling sent by other terminal devices.
The method of claim 8, wherein:

The direct communication resource pool is a sending resource pool.
The method according to claim 8, wherein said determining the second resource set comprises:

determining part of the frequency domain subchannels in the direct communication resource pool;

determining that the PSCCH resource position in the partial frequency domain subchannel belongs to the second resource set;

and / or;

determining part of the time unit in the direct communication resource pool;

It is determined that the PSCCH resource position in the partial time unit belongs to the second resource set.
The method according to claim 9 or 11, wherein the downlink signaling sent by the base station, or the direct connection control signaling sent by other terminal equipment, or the pre-configuration information includes at least one of the following:

the starting position of the partial frequency domain subchannels and the number of frequency domain subchannels; or,

the starting position and subchannel spacing of the partial frequency domain subchannel; or,

a bitmap indicating the partial frequency domain subchannel; or,

the starting position and period of the partial time unit; or,

A bitmap indicating the partial time unit.
The method according to claim 8, wherein the selection of direct connection communication resources according to the second resource set comprises:

Determine that the candidate resource corresponding to the PSCCH time-frequency resource position belonging to the second resource set is a candidate resource in the candidate resource set; or,

The candidate resources whose corresponding PSCCH time-frequency resource positions do not belong to the second resource set are excluded from the candidate resource set.
The method of claim 8, further comprising:

When a preset trigger condition is satisfied, the direct connection communication resource selection is performed based on the second resource set.
The method according to claim 14, wherein the preset trigger condition comprises:

The destination terminal of the sending terminal device communication is in an energy-saving state; or,

receiving a downlink signaling control message sent by a base station, wherein the downlink signaling control message is used to instruct the transmitting terminal device to select a direct connection communication resource based on the second resource set;

The transmission type of the data to be sent belongs to the preset indication type.
The method of claim 8, wherein the second resource set is the same as the first resource set, or the second resource set is a subset of the first resource set, wherein the first resource set is A resource set is a set of direct communication resources for the receiving terminal device to detect and receive the PSCCH.
A direct connection communication device, characterized in that the device is applied to receiving terminal equipment, comprising:

a first determining module, configured to determine a first resource set, where the first resource set belongs to a part of the direct-connection communication resource pool for transmitting the physical direct-connection control channel PSCCH;

A detection module, configured to detect and receive the PSCCH based on the first resource set.
A direct-connected communication device, characterized in that the device is applied to sending terminal equipment, comprising:

a second determining module, configured to determine a second resource set, where the second resource set belongs to a part of the direct-connection communication resource pool for transmitting the physical direct-connection control channel PSCCH;

A selection module, configured to select a direct connection communication resource based on the second resource set.
A communication device, characterized in that it comprises a processor, a transceiver, a memory, and a computer program stored on the memory, wherein the processor runs the computer program to implement the computer program according to any one of claims 1-7. The direct communication method described above.
A communication device, characterized in that it comprises a processor, a transceiver, a memory, and a computer program stored on the memory, the processor runs the computer program to implement any one of claims 8-16 the direct communication method.
A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute any one of claims 1-7, or, as The direct connection communication method according to any one of claims 8-16.