CN114374482A

CN114374482A - Information transmission method, device and terminal

Info

Publication number: CN114374482A
Application number: CN202011095709.6A
Authority: CN
Inventors: 马腾; 任晓涛
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2022-04-19

Abstract

The invention provides an information transmission method, an information transmission device and a terminal, and solves the problem that in the prior art, a terminal cannot sense the resource occupation condition of other terminals in the same resource pool, so that resource selection conflicts are caused. The information transmission method of the invention comprises the following steps: acquiring resource occupation information in a resource pool; and sending resource indication information according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel. The terminal which carries out direct link communication with the first terminal subsequently can take the resource indication information as reference, avoid resource selection conflict caused by hiding nodes and improve the reliability of the system and the utilization rate of resources.

Description

Information transmission method, device and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method, an information transmission device, and a terminal.

Background

In a V2X (Vehicle-to-anything) direct link communication system, as shown in fig. 1, a transmitting terminal Tx UE1 and Tx UE2 may establish a direct link with a receiving terminal Rx UE respectively for communication, but due to the limitation of communication distance, the Tx UE1 and Tx UE2 cannot sense the existence of each other, and cannot know the resource occupation of each other. When Tx UE1 and Tx UE2 use the same resource pool for direct link communication with Rx UEs, it is easy to select the same resource causing a collision.

Disclosure of Invention

The invention aims to provide an information transmission method, an information transmission device and a terminal, which are used for solving the problem that in the prior art, the terminal cannot sense the resource occupation condition of other terminals in the same resource pool, so that resource selection conflict is caused.

In order to achieve the above object, an embodiment of the present invention provides an information transmission method, applied to a first terminal, including:

acquiring resource occupation information in a resource pool;

and sending resource indication information according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel.

The control channel is a physical direct link control channel (PSCCH), the PSCCH carries first direct link control information (SCI), and the first SCI comprises the resource indication information; alternatively, the first and second electrodes may be,

the data channel is a physical direct link shared channel PSSCH, and the PSSCH carries a second SCI which comprises the resource indication information; alternatively, the first and second electrodes may be,

the data channel is a PSSCH, the PSSCH carries a first Radio Resource Control (RRC) instruction, and a first RRC signaling comprises the resource indication information; alternatively, the first and second electrodes may be,

the data channel is a PSSCH, and the PSSCH carries data information, and the data information includes the resource indication information.

Wherein the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; alternatively, the first and second electrodes may be,

the data channel is a PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used for indicating whether the second SCI includes the resource indication information.

Wherein the resource indication information comprises at least one of:

a first indication field for indicating a frequency domain location of the first resource information;

a second indication field for indicating a time domain position of the first resource information;

a third indication field, configured to indicate a repetition period of the resource in the first resource information in a time domain.

The frequency domain position comprises at least two items of a starting point index number of a frequency domain subchannel, the number of frequency domain continuous subchannels and an end point index number of the frequency domain subchannel; alternatively, the first and second electrodes may be,

the frequency domain position includes a starting point index of resource blocks RB and the number of consecutive RBs.

Wherein the time domain position comprises at least one of a Direct Frame Number (DFN), a logical subframe number, a logical slot number, and a symbol index; alternatively, the first and second electrodes may be,

the time domain position includes at least one of a system frame number, SFN, a physical subframe number, a physical slot number, and a symbol index.

Wherein, according to the resource occupation information, sending resource indication information:

determining a target indication mode of the resource indication information according to the resource occupation information;

sending resource indication information according to the target indication mode; wherein the target indication manner comprises one of the following manners:

the first method is as follows: the first resource information is available resource information;

the second method comprises the following steps: the second resource information is unavailable resource information.

Wherein, the determining the target indication mode of the resource indication information according to the resource occupation information includes:

determining that the target indication mode is the second mode under the condition that the occupied or reserved resource proportion in the resource pool is smaller than a preset threshold value according to the resource occupation information;

and under the condition that the proportion of occupied or reserved resources in the resource pool is determined to be greater than or equal to the preset threshold value according to the resource occupation information, determining that the target indication mode is the first mode.

Wherein the method further comprises:

and sending a second RRC signaling, wherein the second RRC signaling carries a mode I or a mode II corresponding to the resource indication information.

Wherein the method further comprises:

sending a third RRC signaling, wherein the third RRC signaling carries a first mode and a second mode corresponding to the resource indication information;

and sending a third SCI, wherein the third SCI carries a fourth indication domain, and the fourth indication domain is used for indicating a first mode or a second mode.

Wherein the sending the resource indication information includes:

and sending the resource indication information by adopting at least one of the following transmission modes:

a broadcast mode;

a unicast mode;

and (4) a multicast mode.

In order to achieve the above object, an embodiment of the present invention further provides an information transmission method, which is applied to a second terminal, and includes:

receiving resource indication information sent by a first terminal, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, the first terminal and a second terminal are communicated through a direct link, and the resource indication information is received through a control channel and/or a data channel.

After receiving the resource indication information sent by the first terminal, the method further includes:

obtaining a first candidate resource set according to the resource indication information;

according to the resource sensing result of the user, resource exclusion is carried out to obtain a second candidate resource set;

determining a final candidate resource set according to the first candidate resource set and the second candidate resource set;

and selecting a sending resource for the service packet to be sent according to the final candidate resource set.

Wherein the determining a final candidate resource set according to the first candidate resource set and the second candidate resource set comprises:

determining a set of the first set of candidate resources and the second set of candidate resources as a final set of candidate resources; alternatively, the first and second electrodes may be,

determining an intersection of the first candidate resource set and the second candidate resource set as a final candidate resource set; alternatively, the first and second electrodes may be,

determining a target candidate resource set as a final candidate resource set under the condition that the intersection of the first candidate resource set and the second candidate resource set is an empty set or the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, wherein the target candidate resource set is one of the first candidate resource set, the union of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

Wherein the method further comprises:

according to the self resource sensing result, resource exclusion is carried out to obtain a third candidate resource set;

and selecting a sending resource for the service packet to be sent according to the third candidate resource set.

Wherein the resource indication information comprises at least one of:

Wherein the method further comprises:

and receiving a second RRC signaling sent by the first terminal, wherein the second RRC signaling carries a first mode or a second mode corresponding to the resource indication information.

Wherein the method further comprises:

receiving a third RRC signaling sent by the first terminal, wherein the third RRC signaling carries a first mode and a second mode corresponding to the resource indication information;

and receiving a third SCI sent by the first terminal, wherein the third SCI carries a fourth indication domain, and the fourth indication domain is used for indicating a first mode or a second mode.

The mode one is used for indicating that the first resource information is available resource information;

the second mode is used for indicating that the first resource information is unavailable resource information.

In order to achieve the above object, an embodiment of the present invention further provides a terminal, where the terminal is a first terminal, and includes:

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

acquiring resource occupation information in a resource pool;

and sending resource indication information through a transceiver according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel.

Wherein the resource indication information comprises at least one of:

Wherein the processor is further configured to:

according to the target indication mode, sending resource indication information through the transceiver; wherein the target indication manner comprises one of the following manners:

Wherein the processor is further configured to:

Wherein the transceiver is further configured to:

a broadcast mode;

a unicast mode;

and (4) a multicast mode.

In order to achieve the above object, an embodiment of the present invention further provides an information transmission apparatus, including:

the acquisition module is used for acquiring resource occupation information in the resource pool;

a first sending module, configured to send resource indication information according to the resource occupation information, where the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel.

In order to achieve the above object, an embodiment of the present invention further provides a processor-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the information transmission method as described above.

In order to achieve the above object, an embodiment of the present invention further provides a terminal, where the terminal is a second terminal, and includes:

Wherein the processor is further configured to:

Wherein the resource indication information comprises at least one of:

Wherein the transceiver is further configured to:

the first receiving module is configured to receive resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, the first terminal and the second terminal communicate through a direct link, and the resource indication information is received through a control channel and/or a data channel.

The technical scheme of the invention at least has the following beneficial effects:

in the technical scheme of the embodiment of the invention, the resource occupation information in the resource pool is obtained; and sending resource indication information according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel, so that a terminal which performs direct link communication with the first terminal subsequently can use the resource indication information as reference, resource selection conflict caused by node hiding is avoided, and the system reliability and the resource utilization rate are improved.

Drawings

Fig. 1 is a schematic diagram of a scenario of direct link communication between existing terminals;

fig. 2 is a flowchart illustrating an information transmission method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a resource location indicated by resource indication information in a first indication manner according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a resource location indicated by the resource indication information indicating the second indication mode according to the embodiment of the present invention;

fig. 5 is a second schematic flow chart of an information transmission method according to an embodiment of the present invention;

fig. 6 is a block diagram of a terminal according to an embodiment of the present invention;

FIG. 7 is a block diagram of an information transmission apparatus according to an embodiment of the present invention;

fig. 8 is a second block diagram of the terminal according to the embodiment of the present invention;

fig. 9 is a second block diagram of an information transmission apparatus according to an embodiment of the invention.

Detailed Description

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

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

The embodiment of the application provides an information transmission method, an information transmission device and a terminal, and aims to solve the problem that a terminal cannot sense the resource occupation condition of other terminals in the same resource pool, so that resource selection conflicts are caused.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

Before the embodiments of the present application are described in detail, the Mode2 resource allocation process in the NR-V2X direct link communication system will be briefly described.

1) Resource perception: the resource sensing means that a terminal determines whether a resource is used by another terminal according to the RSRP (Reference Signal Received Power) strength of a Received Signal on the resource. In the resource sensing process, different characteristics of periodic service and aperiodic service in a mixed service scene in the NR V2X application need to be considered, and the influence of the service type on the resource sensing result. Meanwhile, appropriate resource sensing configuration is required to be performed according to information such as time-frequency resource granularity and resource pool setting in the physical channel. The resource perception window refers to a time window for the terminal to perceive resources.

2) And (3) resource exclusion: the main purpose of resource exclusion is to exclude resources that are not available for resource selection in the resource selection window according to the sensing result, for example, excluding time-frequency resources that the terminal needs to occupy to receive data (the NR V2X terminal performs data transceiving in a half-duplex manner, where half-duplex means that the terminal cannot simultaneously transceive data), forming a candidate resource set, reducing the resource collision probability, and improving reliability.

3) Resource selection: the resource selection mechanism is to select a suitable transmission time-frequency resource for a service packet TB (Transport Block) to be transmitted in a candidate resource set, and the resource selection needs to be performed in consideration of the priority, the time delay, the size of the service packet, and the transmission reliability requirements of the service. The resource selection window refers to a time window for the terminal to select resources.

The NR-V2X Mode2 adopts distributed resource scheduling, and since there is no base station unified scheduling, a UE (User Equipment) needs to determine resource occupation conditions of other UEs through a resource sensing mechanism, and perform resource selection according to a resource sensing result. Compared with a completely random resource selection mechanism, the resource utilization rate can be improved through the resource sensing mechanism, the collision probability is reduced, and the system performance is improved.

When the service arrives, the terminal receives a data packet in a resource sensing window and decodes SCI (Received Link Control Information), resources which fall in a resource selection window and have RSRP larger than an RSRP threshold value need to be excluded, the remaining resources are candidate resources, and then resources required for direct link transmission are randomly selected from 20% of the minimum 20% of the candidate resources of RSSI (Received Signal Strength Indication) or are directly selected from all the candidate resources. Wherein the length of the resource selection window can be configured as the maximum period of the traffic.

In the process of implementing the present application, the inventor finds that in the conventional NR V2X Mode2 distributed resource scheduling system, when determining a candidate resource set, a terminal completely excludes resources according to its own sensing result of a resource pool, and does not refer to information from the resource pool provided by other terminals. Due to the limited communication distance, the shielding of buildings and other reasons, the resource occupation condition of other terminals in the same resource pool cannot be sensed between the terminals, so that resource selection conflict is caused, the reliability of the system is reduced, and the utilization rate of resources is reduced.

Based on this, as shown in fig. 2, an embodiment of the present invention provides an information transmission method, which is applied to a first terminal, and the method includes:

step 201: acquiring resource occupation information in a resource pool;

in this step, the resource pool may be a resource pool of a direct link.

Specifically, the first terminal may analyze the resource occupation status in the resource sensing window through resource sensing to obtain resource occupation information in the resource pool, that is, the current resource occupation status in the resource pool.

Step 202: and sending resource indication information according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel.

It should be noted that, when the first resource information is available resource information, the resource corresponding to the available resource information is a resource remaining in the resource pool after the resource corresponding to the resource occupation information is excluded.

And under the condition that the first resource information is unavailable resource information, the resource corresponding to the unavailable resource information is the resource corresponding to the resource occupation information.

Optionally, the available resource information is available resource set information, and the unavailable resource information is unavailable resource set information.

The information transmission method of the embodiment of the invention obtains the resource occupation information in the resource pool; and sending resource indication information according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel, so that a terminal which performs direct link communication with the first terminal subsequently can use the resource indication information as reference, resource selection conflict caused by node hiding is avoided, and the system reliability and the resource utilization rate are improved.

Specifically, the control channel is a physical direct link control channel (PSCCH), the PSCCH carries first direct link control information (SCI), and the first SCI comprises the resource indication information;

here, the first SCI may be SCI format 1_ B.

Or the data channel is a physical direct link shared channel PSSCH, and the PSSCH carries a second SCI, wherein the second SCI comprises the resource indication information;

here, the second SCI may be SCI format 2_ C.

Or the data channel is a PSSCH, the PSSCH carries a first Radio Resource Control (RRC) instruction, and the first RRC signaling comprises the resource indication information;

here, the first RRC signaling may be RRC signaling of the PC5 port.

Or, the data channel is a PSSCH, and the PSSCH carries data information, where the data information includes the resource indication information.

Further, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used for indicating whether the first SCI includes the resource indication information;

here, the first coordination information indication field may occupy 1bit information amount, that is, by adding 1bit in the first SCI, it is used to distinguish whether the first SCI indicates a time-frequency resource location of the corresponding psch or the resource indication information.

For example, if the first coordination information indication field is "0", it indicates that the first SCI indicates the time-frequency resource location corresponding to the PSSCH; if the second coordination information indication field is "1", it indicates that the first SCI indicates the resource indication information, and vice versa.

Or, the data channel is a psch, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

Here, the second coordination information indication field may occupy 1bit information amount, that is, by adding 1bit in the second SCI, it is used to distinguish the time-frequency resource position of the psch indicated by the second SCI from the resource indication information.

For example, if the second coordination information indication field is "0", it indicates that the second SCI indicates the time-frequency resource location of the psch; if the second coordination information indication field is "1", it indicates that the first SCI indicates the resource indication information, and vice versa.

Optionally, the resource indication information includes at least one of:

The first indicator field includes N1 bits, N1 ≧ 0 and N1 are integers.

Optionally, the frequency domain position includes at least two of a start point index number of the frequency domain subchannel, a number of frequency domain consecutive subchannels, and an end point index number of the frequency domain subchannel;

here, the granularity of the frequency domain resources corresponding to the frequency domain position, that is, the smallest unit of the frequency domain resources, is a subchannel.

Or, the frequency domain position includes a starting point index of the resource block RB and the number of consecutive RBs.

Here, the frequency domain resource granularity corresponding to the frequency domain position, that is, the minimum unit of the frequency domain resource is a resource block.

The second indication field includes N2 bits, N2 ≧ 0 and N2 are integers.

Optionally, the time domain position comprises at least one of a direct frame number, DFN, a logical subframe number, a logical slot number, and a symbol index;

here, the time domain resource granularity corresponding to the time domain position is a logical time slot, that is, the minimum unit of the time domain resource.

Or the time domain position comprises at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

Here, the time domain resource granularity corresponding to the time domain position is a physical time slot, i.e., the minimum unit of the time domain resource.

The third indicator field includes N3 bits, N3 ≧ 0 and N3 are integers. The N3 bit correspondence indicates different slot lengths, where the slots may be logical slots or physical slots.

Here, the repetition period of the resource in the time domain is a time interval in which the resource repeatedly appears in the time domain.

As an alternative implementation, step 202 of the embodiment of the present application may include:

wherein the target indication manner comprises one of the following manners:

Here, the resource indication information includes two indication modes, a mode one and a mode two. As shown in fig. 3, it is a schematic view of resource locations indicated by the resource indication information indicating the first indication mode. As shown in fig. 4, it is a schematic view of the resource location indicated by the resource indication information indicating the second mode.

The step may specifically include:

Here, the ratio of occupied or reserved resources in the resource pool is smaller than a preset threshold, which indicates that the occupied or reserved resources are less, and the resource indication is performed by adopting the second method.

If the ratio of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold value, indicating that the resources are not occupied, the resources are less available, and the resource indication is performed by adopting a first mode.

The resource indication is carried out by adopting the first mode or the second mode according to the congestion degree of the resource pool, so that the content overhead of the direct link control channel can be saved, and the indication flexibility is improved.

And sending resource indication information according to the target indication mode.

As an optional implementation manner, the method of the embodiment of the present application may further include:

Here, the first mode corresponding to the resource indication information carried by the second RRC signaling indicates that the target indication mode of the received resource indication information is the first mode, that is, the first resource information indicated by the resource indication information is available resource information.

If no new RRC signaling is received, the mode corresponding to the resource indication information is kept as the mode one; and if a new RRC signaling is received and the mode corresponding to the resource indication information carried by the new RRC signaling is the mode two, switching or updating the mode corresponding to the source indication information into the mode two.

And if the second RRC signaling carries the second mode corresponding to the resource indication information, the second mode indicates that the target indication mode of the received resource indication information is the second mode, that is, the first resource information indicated by the resource indication information is unavailable resource information.

Similarly, if no new RRC signaling is received, the mode corresponding to the resource indication information is maintained as mode two; if a new RRC signaling is received and the corresponding mode of the new RRC signaling carrying the resource indication information is the mode one, the mode corresponding to the source indication information is switched or updated to the mode one.

As another optional implementation, the method of the embodiment of the present application may further include:

here, the first mode and the second mode corresponding to the carried resource indication information are configured through the third RRC signaling.

The fourth indicator field includes N4 bits, N4 ≧ 0 and N4 are integers. When a certain indication bit in the fourth indication field is 0, the corresponding mode of the resource indication information is represented as a mode one; when the indication bit in the fourth indication field is 1, the method indicating resource indication information correspondence is the method two.

As an optional implementation manner, the sending the resource indication information in step 202 of the method in the embodiment of the present application may include:

a broadcast mode;

a unicast mode;

and (4) a multicast mode.

Here, the resource indication information is transmitted in a broadcast manner, that is, the first terminal transmits the resource indication information to all surrounding terminals in a broadcast manner.

And sending the resource indication information in a unicast mode, namely establishing unicast communication between the first terminal and the second terminal, and sending the resource indication information to the second terminal by the first terminal through unicast.

And sending the resource indication information by adopting a multicast mode, establishing a communication group between the first terminal and N5(N5 is more than or equal to 1) terminals, and sending the resource indication information to other terminals in the group by the first terminal through multicast.

As shown in fig. 5, a schematic flow chart of an information transmission method provided in an embodiment of the present invention is applied to a second terminal, and the method includes:

step 501: receiving resource indication information sent by a first terminal, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, the first terminal and a second terminal are communicated through a direct link, and the resource indication information is received through a control channel and/or a data channel.

According to the information transmission method, the resource indication information sent by the first terminal is received, the resource indication information is used for indicating the first resource information, the first resource information is available resource information or unavailable resource information, and the first terminal and the second terminal are communicated through the direct link.

As an alternative implementation, the method step 501 of the embodiment of the present application may include:

if the first resource information indicated by the resource indication information is available resource information, the resource set corresponding to the available resource information is determined as the first candidate resource set.

And if the first resource information indicated by the resource indication information is unavailable resource information, determining the remaining resource set after excluding the resource set corresponding to the unavailable resource in the resource pool as a first candidate resource set.

the step may specifically include:

determining a set of the first set of candidate resources and the second set of candidate resources as a final set of candidate resources;

or determining the intersection of the first candidate resource set and the second candidate resource set as a final candidate resource set;

or determining a target candidate resource set as a final candidate resource set under the condition that the intersection of the first candidate resource set and the second candidate resource set is an empty set or the intersection of the first candidate resource set and the second candidate resource set does not reach the minimum candidate resource set upper limit, wherein the target candidate resource set is one of the first candidate resource set, the union of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

Here, the minimum candidate resource set upper limit refers to the number of candidate resources having the smallest RSSI in the candidate resource set.

The implementation mode shows that the second terminal can select the candidate resource set which is not determined based on the resource indication information, and only perform resource exclusion and resource selection according to the resource sensing result of the second terminal.

Specifically, the control channel is a physical direct link control channel (PSCCH), the PSCCH carries first direct link control information (SCI), and the first SCI comprises the resource indication information; alternatively, the first and second electrodes may be,

Further, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used for indicating whether the first SCI includes the resource indication information; alternatively, the first and second electrodes may be,

Optionally, the resource indication information includes at least one of:

Optionally, the frequency domain position includes at least two of a start point index number of the frequency domain subchannel, a number of frequency domain consecutive subchannels, and an end point index number of the frequency domain subchannel; alternatively, the first and second electrodes may be,

Optionally, the time domain position comprises at least one of a direct frame number, DFN, a logical subframe number, a logical slot number, and a symbol index; alternatively, the first and second electrodes may be,

Optionally, the method of the embodiment of the present application may further include:

Optionally, the first mode is used to indicate that the first resource information is available resource information; the second mode is used for indicating that the first resource information is unavailable resource information.

Here, if the second RRC signaling carries the first mode corresponding to the resource indication information, after receiving the resource indication information, the second terminal may determine that the first resource information indicated by the resource indication information is available resource information; here, if no new RRC signaling is received, the mode corresponding to the resource indication information is maintained as mode one; and if a new RRC signaling is received and the mode corresponding to the resource indication information carried by the new RRC signaling is the mode two, switching or updating the mode corresponding to the source indication information into the mode two.

If the second RRC signaling carries the second mode corresponding to the resource indication information, after receiving the resource indication information, the second terminal may determine that the first resource information indicated by the resource indication information is the unavailable resource information, where, similarly, if a new RRC signaling is not received, the second mode corresponding to the resource indication information is maintained as the second mode; if a new RRC signaling is received and the corresponding mode of the new RRC signaling carrying the resource indication information is the mode one, the mode corresponding to the source indication information is switched or updated to the mode one.

As another optional implementation manner, the embodiment of the present application may further include:

The following example specifically describes the implementation process of the information transmission method according to the embodiment of the present application.

Example an SCI includes resource indication information indicating available resource information (SCI indicates a set of available resources)

The terminal 1 performs resource sensing, analyzes the resource occupation condition in the resource sensing window, and obtains the result: the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold value by 60%. Terminal 1 indicates the location of available resources in the 1st-stage SCI:

frequency domain position: the first indicator field N1 bits indicates that the subchannel k1 is a frequency domain starting point, and j subchannels are continuous;

time domain position: the second indicator field N2 bit indicates that the starting slot is N1, i consecutive slots; the first and second indicator fields represent a two-dimensional time-frequency resource grid.

Repetition period: the third indicator field N3 bit indicates that the two-dimensional resource grid appears once every p slots.

And the terminal 2 receives the resource indication information sent by the terminal 1 and acquires the available resource set corresponding to the indication. When the terminal 2 performs the resource selection process, the following scheme may be adopted:

1) according to the available resource set and the resource sensing result of the available resource set, removing resources to obtain an available resource set, and determining a final candidate resource set; and selecting a sending resource for the service packet to be sent according to the final candidate resource set.

Here, the specific implementation process has been already described in the above embodiments, and is not described here again.

2) And according to the self resource sensing result, eliminating the resources to obtain an available resource set, and selecting the sending resources for the service package to be sent based on the available resource set.

The method is suitable for non-periodic and burst services, the positions occupied by the resources are frequently changed and irregular, the SCI is used for indicating that the resource occupation information can be frequently and quickly updated, and the method is good in real-time performance and high in efficiency.

Example two SCI includes resource indication information indicating unavailable resource information (SCI indicates a set of unavailable resources)

The terminal 1 performs resource sensing, analyzes the resource occupation condition in the resource sensing window, and obtains the result: the occupied and reserved resources account for 30% of the total resources, exceeding the resource occupancy threshold value by 60%. The terminal 1 indicates the position of occupied/reserved resources (unavailable resources) in the 1st-stage SCI:

And the terminal 2 receives the resource indication information sent by the terminal 1 and acquires the unavailable resource set corresponding to the indication. When the terminal 2 performs the resource selection process, the following scheme may be adopted:

1) obtaining an available resource set according to the unavailable resource set and obtaining an available resource set by excluding resources according to the resource sensing result of the available resource set, and determining a final candidate resource set; and selecting a sending resource for the service packet to be sent according to the final candidate resource set.

The example is suitable for non-periodic and burst services, and the positions occupied by the resources are frequently changed and irregular. The SCI is used for indicating that the resource occupation information can be updated frequently and quickly, and the method is good in real-time performance and high in efficiency.

Example three RRC signaling includes resource indication information indicating a set of available resources (RRC signaling indicates a set of available resources)

The terminal 1 performs resource sensing, analyzes the resource occupation condition in the resource sensing window, and obtains the result: the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold value by 60%. Terminal 1 indicates the location of the available resources in the RRC configuration signaling of port PC 5:

1) removing resources according to the available resource set and a resource sensing result of the available resource set to obtain an available resource set, and determining a final candidate resource set; and selecting a sending resource for the service packet to be sent according to the final candidate resource set.

The example is suitable for the service of periodic and stable triggering, and the occupied position of the resource is fixed and has periodicity. The resource occupation information is indicated by using RRC configuration signaling of a PC5 port, and once configuration can be maintained for a long time, thereby avoiding frequent transmission of SCI to occupy the direct link resource.

Example four resource indication information is transmitted by broadcasting

The terminal 1 performs resource sensing, analyzes the resource occupation condition in the resource sensing window, and obtains the result: the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold value by 60%. The terminal 1 indicates the location of occupied/reserved resources (unavailable resources) in the 1st-stage SCI by broadcasting:

And the terminal 2 receives the resource indication information broadcasted by the terminal 1 and acquires the unavailable resource set corresponding to the indication. When the terminal 2 performs the resource selection process, the following scheme may be adopted:

In the example, the available or unavailable resource set is sent to other terminals through broadcasting, so that the speed of eliminating and selecting resources by other terminals is improved, resource conflict caused by hidden nodes is avoided, and the receiving performance of the whole system/resource pool is improved.

Example five resource indication information is transmitted in unicast mode

The terminal 1 performs resource sensing, analyzes the resource occupation condition in the resource sensing window, and obtains the result: the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold value by 60%. Terminal 1 and terminal 2 have established unicast transmission of a direct link, and terminal 1 indicates the position of occupied/reserved resources (unavailable resources) in 1st-stage SCI:

And after receiving the resource indication information directionally transmitted by the terminal 1, the terminal 2 obtains an unavailable resource set corresponding to the indication. When the terminal 2 performs the resource selection process, the following scheme may be adopted:

The example is suitable for directionally providing the available or unavailable resource set to other terminals, so that the speed of excluding resources and selecting resources by other terminals is improved, resource conflict caused by hidden nodes is avoided, and the self receiving performance is improved.

Sixth example of sending resource indication information by multicast

The terminal 1 performs resource sensing, analyzes the resource occupation condition in the resource sensing window, and obtains the result: the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold value by 60%. The terminal 1 forms a group with other L terminals, and establishes a direct link, the terminal 1 indicates the position of occupied/reserved resources (unavailable resources) in the 1st-stage SCI by multicast, and sends the following information to the member terminals of the group:

The terminal 2, as a member of the group, receives the resource indication information transmitted from the terminal 1,

a set of unavailable resources corresponding to the indication is obtained. When the terminal 2 performs the resource selection process, the following scheme may be adopted:

The example is suitable for sending the available or unavailable resource set to other terminals in the group through multicast, so that the speed of eliminating the resources and selecting the resources by the group member terminal is improved, the resource conflict caused by hidden nodes is avoided, and the receiving performance of the group of terminals and the resource pool is improved.

As shown in fig. 6, an embodiment of the present invention further provides a terminal, where the terminal is a first terminal, the memory 620, the transceiver 600, and the processor 610: a memory 620 for storing a computer program; a transceiver 600 for transceiving data under the control of the processor 610; a processor 610 for reading the computer program in the memory 620 and performing the following operations:

acquiring resource occupation information in a resource pool;

and sending resource indication information through a transceiver according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, and the first resource information is available resource information or unavailable resource information.

Wherein in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 610, and various circuits, represented by memory 620, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 600 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. For different user devices, the user interface 630 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 610 in performing operations.

Alternatively, the processor 610 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also have a multi-core architecture.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Optionally, the control channel is a physical direct link control channel PSCCH, and the PSCCH carries first direct link control information SCI, where the first SCI includes the resource indication information; alternatively, the first and second electrodes may be,

Optionally, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; alternatively, the first and second electrodes may be,

Optionally, the resource indication information includes at least one of:

Optionally, the time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical slot number, and a symbol index; alternatively, the first and second electrodes may be,

Optionally, the processor 610 is further configured to:

Optionally, the transceiver 600 is further configured to:

a broadcast mode;

a unicast mode;

and (4) a multicast mode.

The terminal of the embodiment of the invention acquires the resource occupation information in the resource pool; and sending resource indication information according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel, so that a terminal which performs direct link communication with the first terminal subsequently can use the resource indication information as reference, resource selection conflict caused by node hiding is avoided, and the system reliability and the resource utilization rate are improved.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

As shown in fig. 7, an embodiment of the present invention further provides an information transmission apparatus, including:

an obtaining module 701, configured to obtain resource occupation information in a resource pool;

a first sending module 702, configured to send resource indication information according to the resource occupation information, where the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel.

Optionally, the control channel is PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; alternatively, the first and second electrodes may be,

Optionally, the resource indication information includes at least one of:

Optionally, the first sending module 702 includes:

a first determining unit, configured to determine a target indication manner of the resource indication information according to the resource occupancy information;

a first sending unit, configured to send resource indication information according to the target indication manner; wherein the target indication manner comprises one of the following manners:

Optionally, the first determining unit is specifically configured to:

Optionally, the information transmission apparatus may further include:

and the second sending module is used for sending a second RRC signaling, and the second RRC signaling carries the mode I or the mode II corresponding to the resource indication information.

Optionally, the information transmission apparatus may further include:

the third sending module is used for sending a third RRC signaling, and the third RRC signaling carries a first mode and a second mode corresponding to the resource indication information;

and a fourth sending module, configured to send a third SCI, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate the first mode or the second mode.

Optionally, the first sending module 702 includes:

a second sending unit, configured to send the resource indication information by using at least one of the following transmission manners:

a broadcast mode;

a unicast mode;

and (4) a multicast mode.

The information transmission device of the embodiment of the invention acquires the resource occupation information in the resource pool; and sending resource indication information according to the resource occupation information, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and/or a data channel, so that a terminal which performs direct link communication with the first terminal subsequently can use the resource indication information as reference, resource selection conflict caused by node hiding is avoided, and the system reliability and the resource utilization rate are improved.

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

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

acquiring resource occupation information in a resource pool;

When executed by the processor, the program can implement all the implementation manners applied to the method embodiment at the first terminal side shown in fig. 2, and details are not described here for avoiding repetition.

As shown in fig. 8, an embodiment of the present invention further provides a terminal, which is a second terminal, including the memory 820, the transceiver 800, the processor 810: a memory 820 for storing a computer program; a transceiver 800 for transceiving data under the control of the processor 810; a processor 810 for reading the computer program in the memory and performing the following operations:

receiving resource indication information sent by a first terminal through a transceiver, wherein the resource indication information is used for indicating first resource information, the first resource information is available resource information or unavailable resource information, the first terminal and a second terminal are communicated through a direct link, and the resource indication information is received through a control channel and/or a data channel.

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 810, and various circuits, represented by memory 820, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 800 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. The user interface 830 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 810 in performing operations.

Alternatively, the processor 810 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also have a multi-core architecture.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated. Optionally, the processor 810 is further configured to:

Optionally, the processor 810 is further configured to:

Optionally, the resource indication information includes at least one of:

Optionally, the transceiver 800 is further configured to:

Optionally, the mode one is used to indicate that the first resource information is available resource information;

The terminal of the embodiment of the invention receives the resource indication information sent by the first terminal, the resource indication information is used for indicating the first resource information, the first resource information is available resource information or unavailable resource information, and the first terminal and the second terminal are communicated through the direct link.

As shown in fig. 9, the present invention also provides an information transmission apparatus, including:

a first receiving module 901, configured to receive resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, the first terminal and the second terminal communicate through a direct link, and the resource indication information is received through a control channel and/or a data channel.

Optionally, the information transmission apparatus may further include:

the first processing module is used for obtaining a first candidate resource set according to the resource indication information;

the second processing module is used for removing resources according to the resource sensing result of the second processing module to obtain a second candidate resource set;

a third processing module, configured to determine a final candidate resource set according to the first candidate resource set and the second candidate resource set;

and the first resource selection module is used for selecting transmission resources for the service packet to be transmitted according to the final candidate resource set.

Optionally, the third processing module includes:

a first processing unit, configured to determine a set of the first candidate resource set and the second candidate resource set as a final candidate resource set; alternatively, the first and second electrodes may be,

a second processing unit, configured to determine an intersection of the first candidate resource set and the second candidate resource set as a final candidate resource set; alternatively, the first and second electrodes may be,

a third processing unit, configured to determine a target candidate resource set as a final candidate resource set when an intersection of the first candidate resource set and the second candidate resource set is an empty set or an intersection of the first candidate resource set and the second candidate resource set does not reach a minimum candidate resource set upper limit, where the target candidate resource set is one of the first candidate resource set, a set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

Optionally, the information transmission apparatus may further include:

the fourth processing module is used for removing resources according to the resource sensing result of the fourth processing module to obtain a third candidate resource set;

and the first resource selection module is used for selecting a sending resource for the service packet to be sent according to the third candidate resource set.

Optionally, the resource indication information includes at least one of:

Optionally, the information transmission apparatus further includes:

and the second receiving module is used for receiving a second RRC signaling sent by the first terminal, wherein the second RRC signaling carries the first mode or the second mode corresponding to the resource indication information.

Optionally, the information transmission apparatus further includes:

a third receiving module, configured to receive a third RRC signaling sent by the first terminal, where the third RRC signaling carries a first mode and a second mode corresponding to the resource indication information;

and a fourth receiving module, configured to receive a third SCI sent by the first terminal, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate the first mode or the second mode.

Optionally, the first mode is used to indicate that the first resource information is available resource information;

The information transmission device of the embodiment of the invention receives the resource indication information sent by the first terminal, the resource indication information is used for indicating the first resource information, the first resource information is available resource information or unavailable resource information, and the first terminal and the second terminal are communicated through the direct link.

In some embodiments of the invention, there is also provided a processor readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of:

When executed by the processor, the program can implement all the implementation manners in the embodiment of the method applied to the second terminal side shown in fig. 5, and details are not described here for avoiding repetition.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable System may be a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (General Packet Radio Service, GPRS) System, a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (Frequency Division Duplex, FDD) System, a LTE Time Division Duplex (TDD) System, a Long Term Evolution (Long Term Evolution Access, LTE-a) System, a Universal Mobile Telecommunications System (UMTS), a Universal Mobile telecommunications Access (WiMAX) System, a New Radio network Access (NR 5, WiMAX) System, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An information transmission method applied to a first terminal is characterized by comprising the following steps:

acquiring resource occupation information in a resource pool;

2. The method of claim 1,

3. The method of claim 2,

the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used for indicating whether the first SCI includes the resource indication information; alternatively, the first and second electrodes may be,

4. The method of claim 1, wherein the resource indication information comprises at least one of:

5. The method of claim 4, wherein the frequency domain position comprises at least two of a start point index number of a frequency domain subchannel, a number of frequency domain consecutive subchannels, and an end point index number of a frequency domain subchannel; alternatively, the first and second electrodes may be,

6. The method of claim 4, wherein the time domain position comprises at least one of a Direct Frame Number (DFN), a logical subframe number, a logical slot number, and a symbol index; alternatively, the first and second electrodes may be,

7. The method of claim 1, wherein the sending resource indication information according to the resource occupancy information:

8. The method according to claim 7, wherein the determining a target indication mode of the resource indication information according to the resource occupancy information comprises:

9. The method of claim 7, further comprising:

10. The method of claim 7, further comprising:

11. The method of claim 1, wherein the sending the resource indication information comprises:

a broadcast mode;

a unicast mode;

and (4) a multicast mode.

12. An information transmission method applied to a second terminal is characterized by comprising the following steps:

13. The method according to claim 12, wherein after receiving the resource indication information sent by the first terminal, the method further comprises:

14. The method of claim 13, wherein determining a final candidate set of resources from the first candidate set of resources and the second candidate set of resources comprises:

15. The method of claim 12, further comprising:

16. The method of claim 12,

17. The method of claim 12,

18. The method of claim 12, wherein the resource indication information comprises at least one of:

19. The method of claim 18, wherein the frequency domain position comprises at least two of a start point index number of a frequency domain subchannel, a number of frequency domain consecutive subchannels, and an end point index number of a frequency domain subchannel; alternatively, the first and second electrodes may be,

20. The method of claim 18, wherein the time domain position comprises at least one of a Direct Frame Number (DFN), a logical subframe number, a logical slot number, and a symbol index; alternatively, the first and second electrodes may be,

21. The method of claim 12, further comprising:

22. The method of claim 12, further comprising:

23. The method of claim 21 or 22,

the first mode is used for indicating that the first resource information is available resource information;

24. A terminal, the terminal being a first terminal comprising a memory, a transceiver, a processor:

acquiring resource occupation information in a resource pool;

25. The terminal of claim 24,

26. The terminal of claim 25,

27. The terminal according to claim 24, wherein the resource indication information comprises at least one of:

28. The terminal of claim 24, wherein the processor is further configured to:

29. The terminal of claim 28, wherein the processor is further configured to:

30. An information transmission apparatus, comprising:

31. A terminal, the terminal being a second terminal, comprising a memory, a transceiver, a processor:

32. The terminal of claim 31, wherein the processor is further configured to:

33. The terminal of claim 32, wherein the processor is further configured to:

34. The terminal of claim 31, wherein the processor is further configured to:

35. An information transmission apparatus, comprising:

36. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to execute the steps of the information transmission method of any one of claims 1 to 11 or the steps of the information transmission method of any one of claims 12 to 23.