WO2021184887A1 - Resource request method and apparatus, device, and storage medium - Google Patents

Abstract

Disclosed are a resource request method and apparatus, a device, and a storage medium. The method comprises: sending first indication information to a network side device, the first indication information being used for indicating that a terminal needs to transmit a CSI MAC CE on a direct communication interface; and obtaining a direct communication interface resource allocated by the network side device, and transmitting the CSI MAC CE by using the direct communication interface resource.

Description

Resource request method, device, equipment and storage medium

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010185937.6 filed in China on March 16, 2020, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of communication technologies, and in particular, to a method, device, device, and storage medium for requesting resources.

Background technique

In order to communicate more efficiently, direct communication between terminals is introduced. For ease of description, the direct communication link between terminals is defined as a Sidelink link (also called a bypass), and its corresponding wireless interface is called a direct communication interface (also called a Sidelink interface or a bypass interface); on the network side The cellular communication link between the device and the terminal is called a Uu link, and its corresponding interface is called a Uu interface. As shown in Figure 1, UE1 and UE2 communicate directly through a Sidelink link, and UE1 and UE2 communicate with a network-side device through a Uulink link.

For direct communication, in order for UE1 to learn the channel quality of the direct communication interface between UE1 and UE2, UE2 needs to feed back CSI (Channel State Information) to UE1. The CSI is transmitted through a CSI MAC (Media Access Control, Media Access Control) CE (Control Element, control unit).

For CSI MAC CE, the physical layer introduces a delay limit, that is, latency bound.

For a terminal whose Uu interface is in the RRC (Radio Resource Control) connection state and the direct communication interface uses the network-scheduled resource allocation mode, the conventional direct communication interface resource request process is as follows:

(1) The terminal sends a Sidelink SR (Scheduling Request, scheduling request) to the network;

(2) The network allocates Uu port uplink resources for the terminal;

(3) The terminal reports Sidelink BSR (Buffer Status Report) to the network;

(4) The network allocates direct communication interface resources for the terminal.

However, for a direct interface terminal, if only the CSI MAC CE needs to be sent, it will not trigger the Sidelink BSR. Therefore, the terminal cannot obtain the direct communication interface resource through the above-mentioned conventional direct communication interface resource request process.

Summary of the invention

The embodiments of the present disclosure provide a resource request method, device, device, and storage medium to solve the problem that the direct communication interface cannot request direct communication interface resources from the network when only the CSI MAC CE needs to be sent.

In the first aspect, embodiments of the present disclosure provide a resource request method, which is applied to a terminal, and includes:

Sending first indication information to the network side device, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface;

Acquire the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE.

Wherein, the first indication information is transmitted in a MAC CE mode.

Wherein, any one of the following methods is used to identify the MAC CE:

The MAC subheader (subheader) corresponding to the MAC CE carries the target logical channel identifier LCID;

The MAC subheader corresponding to the MAC CE carries the LCID corresponding to the direct communication interface Sidelink BSR MAC CE, and the MAC subheader carries second indication information, and the second indication information is used to indicate the content transmitted by the MAC CE Is it Sidelink BSR MAC CE or the first indication information.

Wherein, third indication information is carried in the MAC subheader, and the third indication information is used to indicate the number and type of the CSI MAC CE currently suspended on the direct communication interface, or the MAC subheader carries the fourth indication information. Indication information, the fourth indication information is used to indicate the specific number of CSI MAC CE currently suspended by the direct communication interface, where the number type includes one or more than one.

Wherein, the content of the MAC CE is any one of the following:

Is empty;

It is the direct communication destination address and/or scheduling delay requirement corresponding to the CSI MAC CE with the highest priority or the most urgent scheduling requirement among the CSI MAC CE currently suspended on the direct communication interface of the terminal;

Is the number of all CSI MAC CE currently suspended on the terminal's direct communication interface;

It is the direct communication destination address and/or scheduling delay requirement corresponding to each CSI MAC CE currently suspended on the terminal direct communication interface.

Wherein, the length of the MAC CE is a variable length, and the MAC subheader corresponding to the MAC CE carries a length indicator field, and the length indicator field is used to indicate the length of the MAC CE.

Wherein, the scheduling delay requirement is determined as follows:

Determine the time difference T1 between the start time of the uplink resource corresponding to the first indication information and the trigger time of each CSI MAC CE;

Determine the difference T2 between the delay limit of each CSI MAC CE and the T1;

The quantized value of T2 or T2 is used as the scheduling delay requirement.

Wherein, the trigger condition of the first indication information is:

The direct communication interface has a suspended CSI MAC CE and the Uu interface has no available uplink resources; or,

The direct communication interface has a suspended CSI MAC CE, and the Uu interface has available uplink resources, but it does not meet the CSI MAC CE transmission delay limit; or,

The direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resources, and there is no Sidelink BSR trigger; or,

The direct communication interface has a suspended CSI MAC CE, the Uu interface has available uplink resources but does not meet the CSI MAC CE transmission delay limit, and there is no Sidelink BSR trigger.

Wherein, the cancellation condition of the first indication information is that the direct communication interface is triggered by a Sidelink BSR; or, the first indication information is transmitted.

Wherein, the sending the first indication information to the network side device includes:

Determining a target resource for sending the first indication information;

Sending the first indication information to the network side device by using the target resource.

Wherein, the determining the target resource for sending the first indication information includes:

When the direct communication interface currently has a suspended CSI MAC CE:

If the Uu interface has uplink resources, use the uplink resource of the Uu interface as the target resource;

If the Uu interface does not have uplink resources and the CSI MAC CE does not have CSI MAC CE dedicated direct communication interface Sidelink SR (Scheduling Request) resources on the Uu interface, initiate a random access process to the network side device to obtain the The network-side device allocates the uplink resource of the Uu interface through a random access process, and uses the uplink resource of the Uu interface allocated by the network-side device as the target resource.

Wherein, in the case that the Uu interface has uplink resources, if there is no Sidelink BSR to be sent at the transmission time corresponding to the uplink resource, the uplink resource of the Uu interface is used as the target resource;

In the case that the Uu interface does not have uplink resources and the CSI MAC CE does not have the CSI MAC CE dedicated Sidelink SR resources on the Uu interface, if the network side device allocates the Uu interface uplink resource corresponding to the transmission time through the random access process There is no Sidelink BSR to be sent, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Wherein, the uplink resources of the Uu interface meet the following conditions:

The difference between the time when the uplink resource of the Uu interface is located and the trigger time of the suspended CSI MAC CE is less than T3, where T3 is less than the delay limit of the suspended CSI MAC CE.

Wherein, when the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following:

The first indication information is located after the Configured Grant Confirmation (pre-configured authorization confirmation) MAC CE and before the BSR MAC CE;

The first indication information is located after C-RNTI (Cell RNTI, Cell Radio Network Temporary Identity) MAC CE or UL CCCH (Common Control Channel) data and before Configured Grant Confirmation MAC CE.

In the second aspect, the embodiments of the present disclosure provide a resource request method, which is applied to a network side device, and includes:

Receiving first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface;

According to the first indication information, direct communication interface resources are allocated to the terminal.

Wherein, the first indication information is transmitted in a MAC CE mode.

Wherein, the allocating direct communication interface resources for the terminal according to the first instruction information includes:

According to at least one of the following information, direct communication interface resources are allocated to the terminal:

The number of CSI MAC CE currently suspended on the direct communication interface;

The destination address of the direct communication interface corresponding to the currently suspended CSI MAC CE of the direct communication interface;

The size of the direct communication interface CSI MAC CE;

Direct communication interface CSI MAC CE scheduling delay requirements.

In a third aspect, embodiments of the present disclosure provide a resource request device applied to a terminal, which includes:

The first sending module is configured to send first indication information to the network side device, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface;

The first obtaining module is configured to obtain the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE.

In a fourth aspect, embodiments of the present disclosure provide a resource request device, which is applied to a network side device, and includes:

The first receiving module is configured to receive first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface;

The first allocation module is configured to allocate direct communication interface resources to the terminal according to the first indication information.

In a fifth aspect, embodiments of the present disclosure provide a resource request device, which is applied to a terminal, and includes: a transceiver, a memory, a processor, and a program stored on the memory and running on the processor;

The processor is used to read the program in the memory and execute the following process:

Sending first indication information to the network side device, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface;

Acquire the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE.

Wherein, the first indication information is transmitted in a MAC CE mode.

Wherein, any one of the following methods is used to identify the MAC CE:

The MAC subheader corresponding to the MAC CE carries the target LCID;

The MAC subheader corresponding to the MAC CE carries the LCID corresponding to the Sidelink BSR MAC CE, and the MAC subheader carries second indication information, and the second indication information is used to indicate that the content transmitted by the MAC CE is a Sidelink BSR The MAC CE is also the first indication information.

Wherein, third indication information is carried in the MAC subheader, and the third indication information is used to indicate the number and type of the CSI MAC CE currently suspended on the direct communication interface, or the MAC subheader carries the fourth indication information. Indication information, the fourth indication information is used to indicate the specific number of CSI MAC CE currently suspended by the direct communication interface, where the number type includes one or more than one.

Wherein, the content of the MAC CE is any one of the following:

Is empty;

It is the direct communication destination address and/or scheduling delay requirement corresponding to the CSI MAC CE with the highest priority or the most urgent scheduling requirement among the CSI MAC CE currently suspended on the direct communication interface of the terminal;

Is the number of all CSI MAC CE currently suspended on the terminal's direct communication interface;

It is the direct communication destination address and/or scheduling delay requirement corresponding to each CSI MAC CE currently suspended on the terminal direct communication interface.

Wherein, the length of the MAC CE is a variable length, and the MAC subheader corresponding to the MAC CE carries a length indicator field, and the length indicator field is used to indicate the length of the MAC CE.

Wherein, the scheduling delay requirement is determined as follows:

Determine the time difference T1 between the start time of the uplink resource corresponding to the first indication information and the trigger time of each CSI MAC CE;

Determine the difference T2 between the delay limit of each CSI MAC CE and the T1;

The quantized value of T2 or T2 is used as the scheduling delay requirement.

Wherein, the trigger condition of the first indication information is:

The direct communication interface has a suspended CSI MAC CE and the Uu interface has no available uplink resources; or,

The direct communication interface has a suspended CSI MAC CE, and the Uu interface has available uplink resources, but it does not meet the CSI MAC CE transmission delay limit; or,

The direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resources, and there is no Sidelink BSR trigger; or,

The direct communication interface has a suspended CSI MAC CE, the Uu interface has available uplink resources but does not meet the CSI MAC CE transmission delay limit, and there is no Sidelink BSR trigger.

Wherein, the cancellation condition of the first indication information is that the direct communication interface is triggered by a Sidelink BSR; or, the first indication information is transmitted.

Wherein, the processor is also used to read the program in the memory and execute the following process:

Determining a target resource for sending the first indication information;

Sending the first indication information to the network side device by using the target resource.

Wherein, the processor is also used to read the program in the memory and execute the following process:

When the direct communication interface currently has a suspended CSI MAC CE:

If the Uu interface has uplink resources, use the uplink resource of the Uu interface as the target resource;

If the Uu interface does not have uplink resources and the CSI MAC CE does not have CSI MAC CE dedicated Sidelink SR resources on the Uu interface, initiate a random access process to the network side device, and obtain the network side device allocated through the random access process The uplink resource of the Uu interface, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Wherein, the processor is also used to read the program in the memory and execute the following process:

In the case that the Uu interface has uplink resources, if no Sidelink BSR needs to be sent at the transmission time corresponding to the uplink resource, use the uplink resource of the Uu interface as the target resource;

In the case that the Uu interface does not have uplink resources and the CSI MAC CE does not have the CSI MAC CE dedicated Sidelink SR resources on the Uu interface, if the network side device allocates the Uu interface uplink resource corresponding to the transmission time through the random access process There is no Sidelink BSR to be sent, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Wherein, the uplink resources of the Uu interface meet the following conditions:

The difference between the time when the uplink resource of the Uu interface is located and the trigger time of the suspended CSI MAC CE is less than T3, where T3 is less than the delay limit of the suspended CSI MAC CE.

Wherein, when the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following:

The first indication information is located after Configured Grant Confirmation MAC CE and before BSR MAC CE;

The first indication information is located after the C-RNTI MAC CE or UL CCCH data and before the Configured Grant Confirmation MAC CE.

In a sixth aspect, the embodiments of the present disclosure provide a resource request device, which is applied to a network side device, and includes: a transceiver, a memory, a processor, and a program that is stored on the memory and can run on the processor; Receiving first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface;

According to the first indication information, direct communication interface resources are allocated to the terminal.

Wherein, the first indication information is transmitted in a MAC CE mode.

Wherein, the processor is also used to read the program in the memory and execute the following process:

According to at least one of the following information, direct communication interface resources are allocated to the terminal:

The number of CSI MAC CE currently suspended on the direct communication interface;

The destination address of the direct communication interface corresponding to the currently suspended CSI MAC CE of the direct communication interface;

The size of the direct communication interface CSI MAC CE;

Direct communication interface CSI MAC CE scheduling delay requirements.

In a seventh aspect, the embodiments of the present disclosure provide a computer-readable storage medium for storing a computer program that, when executed by a processor, implements the steps in the resource request method described in the first aspect, or, When the computer program is executed by the processor, the steps in the resource request method as described in the second aspect are implemented.

In the embodiments of the present disclosure, when the direct communication interface has a CSI MAC CE that needs to be transmitted, the instruction information can be sent to the network side device, so that the network side device allocates direct communication interface resources according to the instruction information. Therefore, using the solution of the embodiment of the present disclosure, when the direct communication interface only has CSI MAC CE to be sent, the terminal can use the first indication information to request direct communication interface resources from the network.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative labor.

Figure 1 is a schematic diagram of direct communication in related technologies;

Figure 2 is one of the flowcharts of the resource request method provided by an embodiment of the present disclosure;

FIG. 3 is the second flowchart of the resource request method provided by an embodiment of the present disclosure;

4 to 14 are schematic diagrams of MAC subheader in the embodiments of the present disclosure;

FIG. 15 is the third flowchart of a resource request method provided by an embodiment of the present disclosure;

FIG. 16 is one of the structural diagrams of a resource request device provided by an embodiment of the present disclosure;

FIG. 17 is the second structural diagram of a resource request device provided by an embodiment of the present disclosure;

Figure 18 is one of the structural diagrams of a resource request device provided by an embodiment of the present disclosure;

Fig. 19 is a second structural diagram of a resource request device provided by an embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

Referring to FIG. 2, FIG. 2 is a flowchart of a resource request method provided by an embodiment of the present disclosure, which is applied to a terminal, as shown in FIG. 2, and includes the following steps:

Step 201: Send first indication information to the network side device, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface.

In the embodiment of the present disclosure, the first indication information is transmitted in the manner of MAC CE. Specifically, in the embodiments of the present disclosure, any of the following methods may be used to identify the MAC CE:

(1) The MAC subheader corresponding to the MAC CE carries the target LCID.

(2) The MAC subheader corresponding to the MAC CE carries the LCID corresponding to the Sidelink BSR MAC CE, and the MAC subheader carries second indication information, which is used to indicate the content transmitted by the MAC CE Is it Sidelink BSR MAC CE or the first indication information.

Wherein, the target LCID may be the LCID dedicated to the MAC CE agreed in the protocol.

In the above two methods, the MAC subheader may also carry third indication information, and the third indication information is used to indicate the number and type of CSI MAC CE currently suspended on the direct communication interface, or The MAC subheader may also carry fourth indication information, where the fourth indication information is used to indicate the specific number of CSI MAC CE currently suspended on the direct communication interface, where the number type includes one or more than one .

In the embodiment of the present disclosure, the content of the MAC CE is any one of the following:

(1) is empty;

(2) It is the direct communication destination address and/or scheduling delay requirement corresponding to the CSI MAC CE with the highest priority or the most urgent scheduling requirement among the CSI MAC CE currently suspended on the direct communication interface of the terminal;

(3) It is the number of all CSI MAC CE currently suspended on the terminal's direct communication interface;

(4) It is the direct communication destination address and/or scheduling delay requirement corresponding to each CSI MAC CE currently suspended on the terminal direct communication interface.

If the MAC CE content is the number of all CSI MAC CEs currently suspended on the terminal's direct communication interface, or if the MAC CE content is the direct communication destination address corresponding to all CSI MAC CEs currently suspended on the terminal's direct communication interface And/or scheduling delay requirements, the length of the MAC CE is a variable length, and the MAC subheader corresponding to the MAC CE carries a length indicator field (such as the L field), and the length indicator field is used to indicate the The length of MAC CE.

Wherein, the scheduling delay requirement is determined as follows:

Determine the time difference T1 between the start time of the uplink resource corresponding to the first indication information and the trigger time of each CSI MAC CE, and then determine the difference between the delay limit of each CSI MAC CE and the T1 Value T2. After that, the quantized value of T2 or T2 is used as the scheduling delay requirement. Among them, T1 and T2 are greater than zero.

In the embodiment of the present disclosure, when any one of the following conditions is met, the first indication information can be triggered:

(1) The direct communication interface has a suspended CSI MAC CE and the Uu interface has no available uplink resources;

(2) The direct communication interface has a suspended CSI MAC CE, and the Uu interface has available uplink resources, but it does not meet the CSI MAC CE transmission delay limit;

(3) The direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resources, and there is no Sidelink BSR trigger;

(4) The direct communication interface has a suspended CSI MAC CE, the Uu interface has available uplink resources but does not meet the CSI MAC CE transmission delay limit, and there is no Sidelink BSR trigger.

When the direct communication interface is triggered by a Sidelink BSR, or the first indication information is transmitted, the first indication information may be cancelled.

In the embodiment of the present disclosure, the target resource for sending the first indication information may be determined, and then the target resource is used to send the first indication information to the network side device.

Specifically, when determining the target resource of the first indication information, it may first be determined whether the direct communication interface has a suspended CSI MAC CE. In the case that the direct communication interface currently has a suspended CSI MAC CE, the target resource can be determined as follows:

If the Uu interface has uplink resources, the uplink resource of the Uu interface is used as the target resource. Further, in a case where the Uu interface has an uplink resource, if there is no Sidelink BSR to be sent at the transmission time corresponding to the uplink resource, the uplink resource of the Uu interface is used as the target resource.

If the Uu interface does not have uplink resources and the CSI MAC CE does not have a CSI MAC CE dedicated direct communication interface scheduling request Sidelink SR resource on the Uu interface, a random access process is initiated to the network side device, and the network side device obtains the random access The uplink resource of the Uu interface allocated by the access process is used, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource. Further, in the case that the Uu interface does not have uplink resources and the CSI MAC CE does not have Sidelink SR resources dedicated to the CSI MAC CE on the Uu interface, if the network side device allocates the uplink resources of the Uu interface through the random access process corresponding to No Sidelink BSR needs to be sent at the transmission moment, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Wherein, the uplink resources of the Uu interface need to meet the following conditions:

The difference between the time when the uplink resource of the Uu interface is located and the trigger time of the suspended CSI MAC CE is less than T3, where T3 is less than the delay limit of the suspended CSI MAC CE. Among them, T3 is greater than zero.

When the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following:

The first indication information is located after the Configured Grant Confirmation MAC CE and before the BSR MAC CE, where the BSR MAC CE may be the BSR MAC CE of the Uu link and/or the Sidelink BSR MAC CE of the direct communication interface;

The first indication information is located after the C-RNTI MAC CE or UL CCCH data and before the Configured Grant Confirmation MAC CE, where the Configured Grant Confirmation MAC CE may be the Configured Grant Confirmation MAC CE corresponding to the U link pre-configuration authorization. /Or Configured Grant Confirmation MAC CE corresponding to the pre-configuration authorization of the direct communication interface.

Step 202: Obtain the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE.

In the embodiments of the present disclosure, when the direct communication interface has a CSI MAC CE that needs to be transmitted, the instruction information can be sent to the network side device, so that the network side device allocates direct communication interface resources according to the instruction information. Therefore, using the solution of the embodiment of the present disclosure, when the direct communication interface only has CSI MAC CE to be sent, the terminal can use the first indication information to request direct communication interface resources from the network.

Referring to FIG. 3, FIG. 3 is a flowchart of a resource request method provided by an embodiment of the present disclosure, which is applied to a terminal, as shown in FIG. 3, including the following steps:

Step 301: Receive first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface.

Wherein, in the embodiment of the present disclosure, the first indication information is transmitted in the manner of MAC CE. For the specific format and included content of the MAC CE, reference may be made to the description of the foregoing embodiment.

Step 302: According to the first instruction information, allocate direct communication interface resources to the terminal.

Specifically, when performing resource allocation according to the first indication information, allocate direct communication interface resources to the terminal according to at least one of the following information:

The number of CSI MAC CE currently suspended on the direct communication interface; the destination address of the direct communication interface corresponding to the CSI MAC CE currently suspended on the direct communication interface; the size of the direct communication interface CSI MAC CE; the scheduling of the direct communication interface CSI MAC CE Delay request.

For example, the size of the resources allocated by the direct communication interface is determined according to the size of the direct communication interface CSI MAC CE of the terminal, and the number of direct communication interfaces CSI MAC CE determines how many resources need to be allocated to the direct communication interface in the time domain. The CSI MAC CE scheduling delay determines the specific moment of resource allocation, and determines which destination address the direct communication interface is allocated to according to the destination address of the direct communication interface.

In the embodiments of the present disclosure, when the direct communication interface has a CSI MAC CE that needs to be transmitted, the instruction information can be sent to the network side device, so that the network side device allocates direct communication interface resources according to the instruction information. Therefore, using the solution of the embodiment of the present disclosure, when the direct communication interface only has CSI MAC CE to be sent, the terminal can use the first indication information to request direct communication interface resources from the network.

In the embodiment of the present disclosure, a new MAC CE is defined, and the terminal requests the dedicated resources of the direct communication interface CSI MAC CE from the network through the new MAC CE. In the embodiments of the present disclosure, this new MAC CE is referred to as "resource request MAC CE".

The following describes the implementation process of the resource request method in the embodiments of the present disclosure in conjunction with different embodiments.

As shown in FIG. 4, the resource request method of the embodiment of the present disclosure includes:

Step 401: The terminal performs CSI MAC CE trigger judgment.

When the terminal receives SCI (Sidelink Control Information, direct communication interface control information), if it carries a CSI indication, it triggers CSI MAC CE. After the CSI MAC CE is triggered, it is in the suspended state.

Step 402: The terminal obtains the resource for sending the resource request MAC CE.

If the terminal has a suspended CSI MAC CE, the terminal judges whether the Uu interface has uplink resources:

(1) If the Uu interface has uplink resources, the terminal determines that the uplink resources of the Uu interface are resources for sending the resource request MAC CE.

(2) If the Uu interface does not have uplink resources, the CSI MAC CE will trigger the Sidelink SR, and the terminal further determines whether the CSI MAC CE has dedicated SR resources on the Uu interface:

(1) If there is, the direct communication interface CSI MAC CE transmission resource request is made through the dedicated SR resource. The network side device receives the SR and allocates direct communication resources to the terminal direct communication interface, and the terminal can use the direct communication resources to transmit the CSI MAC CE;

(2) If not, the terminal needs to initiate RA (Random Access) SR. The network side device allocates the uplink resources of the Uu interface to the terminal through a random access process. Then the terminal determines that the uplink resource of the Uu interface is the resource for sending the CSI MAC CE resource request MAC CE.

Furthermore, in the above process, the uplink resource of the Uu interface must also meet the following conditions before it can be determined as the resource for sending the CSI MAC CE resource request MAC CE: the time when the uplink resource of the Uu interface is located and the CSI MAC CE trigger time The time difference between <T3, and the value of T3 is less than the delay limit of CSI MAC CE.

Step 403: The terminal sends a resource request MAC CE on the determined uplink resource of the Uu interface.

Specifically, the resource request MAC CE format may include but is not limited to the following:

Method 1: The resource request MAC CE has a fixed length and the length is 0. The resource request MAC CE is identified by a MAC subheader carrying a specific LCID. The specific LCID is agreed in the protocol to request a MAC CE dedicated LCID for the resource.

The MAC subheader corresponding to the above resource request MAC CE is shown in Figure 5, where the resource request MAC CE has a fixed length and the length is 0 bits.

Method 2: The resource request MAC CE has a fixed length and the length is 0. The resource request MAC CE is identified by the MAC subheader carrying a specific LCID, and the MAC subheader indicates whether the number of CSI MAC CEs currently suspended on the terminal's direct communication interface is one or more than one (only one bit is required), or in the MAC subheader. The subheader indicates the specific number of CSI MAC CE suspended by the terminal's current direct communication interface (multiple bits are required). In specific instructions, the reserved bit field (R field) in the current MAC subheader can be used to indicate.

The MAC subheader corresponding to the above resource request MAC CE is shown in Figure 6, where one R bit can be used to indicate whether the number of CSI MAC CEs currently suspended by the direct communication interface is one or more. For example, the value of R bit is 0. It represents one; if the value of R bit is 1, it represents more than one. Of course, 2 R bits can also be used to indicate a maximum of 4 CSI MAC CEs. The value of RR is 00, which represents a suspended CSI MAC CE; the value of RR is 01, which means that there are two suspended CSI MAC CEs. analogy. CSI MAC CE has a fixed length and the length is 0bit.

Method 3: The resource request MAC CE has a fixed length or a variable length, and the specific length depends on the number of CSI MAC CE currently suspended on the terminal's direct communication interface. The resource request MAC CE is identified by a MAC subheader carrying a specific LCID. If the resource request MAC CE has a variable length, it is also necessary to indicate the length of the resource request MAC CE with a length indication field (such as the L field) in the MAC subheader.

If the length of the resource request MAC CE is fixed, the MAC subheader corresponding to the resource request MAC CE is shown in Figure 7; if the resource request MAC CE has a variable length, the MAC subheader corresponding to the resource request MAC CE is shown in Figure 8. Among them, the L field indicates the specific length of the resource request MAC CE.

Generally speaking, if the maximum number of suspended CSI MAC CE formats for a terminal is less than 256, then a fixed length is sufficient; otherwise, a variable length is required.

For the resource request MAC CE, the resource request MAC CE uses a fixed length. Assuming that the CSI MAC CE number indication information occupies 6 bits, the resource request MAC CE may be shown in Figure 9, but in actual applications there are CSI MAC CEs. The number of bits occupied by the number indication information can take other values.

Method 4: The resource request MAC CE has a fixed length, and its content only includes the scheduling delay requirements of the CSI MAC CE with the highest priority or the most urgent scheduling requirements among all currently suspended CSI MAC CEs. The resource request MAC CE passes It is identified by the MAC subheader of a specific LCID.

Wherein, the scheduling delay requirement is calculated as follows: determine the time difference T1 between the current moment (the moment when the resource request MAC CE is sent) and the trigger moment of each CSI MAC CE, and then determine the delay limit of each CSI MAC CE The difference between T1 and T1 is T2, and the quantized value of T2 or T2 is used as the scheduling delay requirement.

The MAC subheader corresponding to the resource request MAC CE is shown in Figure 10. The resource request MAC CE is a fixed length, suppose it is 1 byte. It is assumed that the CSI MAC CE scheduling delay requires 6 bits. A specific example is shown in Figure 11. However, in actual applications, other bits can be used for the scheduling delay requirements.

Method 5: The resource request MAC CE is of variable length, and its content only includes the scheduling delay requirements of all currently suspended CSI MAC CE CSI MAC CE. The resource request MAC CE is identified by the MAC subheader carrying a specific LCID. Also use the L field to indicate the length of the MAC CE.

Wherein, the scheduling delay requirement is calculated as follows: determine the time difference T1 between the current moment (the moment when the resource request MAC CE is sent) and the trigger moment of each CSI MAC CE, and then determine the delay limit of each CSI MAC CE The difference between T1 and T1 is T2, and the quantized value of T2 or T2 is used as the scheduling delay requirement.

The subheader format corresponding to the resource request MAC CE is shown in Figure 12. The resource request MAC CE has a variable length. As shown in Figure 13, the scheduling delay requirement takes 4 bits as an example, but in actual applications, the scheduling delay requirement can use other numbers of bits.

Method 6: The MAC subheader corresponding to the resource request MAC CE carries the LCID corresponding to the Sidelink BSR MAC CE, and one Rbit in the MAC subheader is used to indicate whether the current direct communication interface has a suspended CSI MAC CE. If the direct communication interface only has CSI MAC CE, then the content of Sidelink BSR MAC CE is blank.

The subheader format corresponding to the resource request MAC CE is shown in Figure 14. Whether the MAC CE part has a length depends on whether there is a Sidelink BSR currently.

The priority determination method when the resource request MAC CE performs uplink LCP (Logical Channel priority) processing on the Uu interface may be as follows:

Method 1: After Configured Grant Confirmation MAC CE (Configured Grant Confirmation MAC CE including Uu interface and/or direct communication interface), BSR MAC CE (include Uu interface and/or direct communication interface BSR MAC CE). Wherein, the BSR MAC CE may be the BSR MAC CE of the Uu link and/or the Sidelink BSR MAC CE of the direct communication interface.

For example, the priority position of the resource request MAC CE can be as follows:

-C-RNTI MAC CE or data from UL-CCCH;

-Configured Grant Confirmation MAC CE;

-Resource request MAC CE;

-MAC CE for Sidelink-BSR prioritized according to clause 5.x.1.6;

-MAC CE for BSR, with exception of BSR included for padding;

-Single Entry PHR MAC CE or Multiple Entry PHR MAC CE;

-MAC CE for Sidelink-BSR, with exception of Sidelink-BSR prioritized according to clause 5.x.1.6 and Sidelink-BSR included for padding;

-data from any Logical Channel, except data from UL-CCCH;

-MAC CE for Recommended bit rate query;

-MAC CE for BSR included for padding;

-MAC CE for Sidelink-BSR included for padding.

Method 2: After the C-RNTI MAC CE or UL-CCCH data, before the Configured Grant Confirmation MAC CE (including the Uu interface and/or the Configured Grant Confirmation MAC CE of the direct communication interface), the Configured Grant Confirmation MAC CE may be Configured Grant Confirmation MAC CE corresponding to Uu link pre-configuration authorization and/or Configured Grant Confirmation MAC CE corresponding to pre-configuration authorization of direct communication interface.

For example, the priority position of the resource request MAC CE can be as follows:

-C-RNTI MAC CE or data from UL-CCCH;

-Resource request MAC CE;

-Configured Grant Confirmation MAC CE;

-MAC CE for Sidelink-BSR prioritized according to clause 5.x.1.6;

-MAC CE for BSR, with exception of BSR included for padding;

-Single Entry PHR MAC CE or Multiple Entry PHR MAC CE;

-MAC CE for Sidelink-BSR, with exception of Sidelink-BSR prioritized according to clause 5.x.1.6 and Sidelink-BSR included for padding;

-data from any Logical Channel, except data from UL-CCCH;

-MAC CE for Recommended bit rate query;

-MAC CE for BSR included for padding;

-MAC CE for Sidelink-BSR included for padding.

Step 404: The network side device allocates transmission resources of the direct communication interface CSI MAC CE for the terminal.

After receiving the resource from the network side, the terminal organizes a MAC PDU (Protocol Data Unit, protocol data unit) according to the priority processing procedure of the direct communication interface, and the MAC PDU may carry the resource request MAC CE.

As shown in FIG. 15, the resource request method of the embodiment of the present disclosure includes:

Step 1501: The terminal performs CSI MAC CE trigger judgment.

When the terminal receives the SCI, if it carries the CSI indication, it triggers the CSI MAC CE. After the CSI MAC CE is triggered, it is in the suspended state.

Step 1502: The terminal obtains the resource for sending the resource request MAC CE.

If the terminal has a suspended CSI MAC CE, the terminal judges whether the Uu interface has uplink resources:

(1) If the Uu interface has uplink resources, and no Sidelink BSR needs to be sent at the transmission time corresponding to the uplink resource of the Uu interface, the terminal determines that the uplink resource of the Uu interface is the resource for sending the CSI MAC CE resource request MAC CE.

(2) If the Uu interface does not have uplink resources, the CSI MAC CE will trigger the Sidelink SR, and the terminal further determines whether the CSI MAC CE has dedicated SR resources on the Uu interface:

(1) If there is, the direct communication interface CSI MAC CE transmission resource request is made through the dedicated SR resource. The network side device receives the SR and allocates direct communication resources to the direct communication interface of the terminal, and the terminal can use the direct communication resources to transmit the CSI MAC CE;

(2) If not, the terminal needs to initiate RA SR. The network side device allocates the uplink resources of the Uu interface to the terminal through a random access process. If there is no Sidelink BSR to be sent at the transmission moment corresponding to the uplink resource of the Uu interface, the terminal determines that the uplink resource of the Uu interface is the resource for sending the CSI MAC CE resource request MAC CE.

Furthermore, in the above process, the uplink resource of the Uu interface must also meet the following conditions before it can be determined as the resource for sending the CSI MAC CE resource request MAC CE: the time when the uplink resource of the Uu interface is located and the CSI MAC CE trigger time The time difference between <T3, and the value of T3 is less than the delay limit of CSI MAC CE.

Step 1503: The terminal sends a resource request MAC CE on the determined uplink resource of the Uu interface.

Step 1504: The network side device allocates transmission resources of the direct communication interface CSI MAC CE for the terminal.

After receiving the resource from the network side, the terminal organizes the MAC PDU according to the priority processing procedure of the direct communication interface, and the MAC PDU may carry the CSI MAC CE.

Among them, the description of step 1503 and step 1504 can refer to the description of step 403 and 404 described above.

The embodiment of the present disclosure also provides a resource request device, which is applied to a terminal. Refer to FIG. 16, which is a structural diagram of a resource request apparatus provided by an embodiment of the present disclosure. Since the principle of the resource request device to solve the problem is similar to the resource request method in the embodiment of the present disclosure, the implementation of the resource request device can refer to the implementation of the method, and the repetition will not be repeated.

As shown in FIG. 16, the resource requesting apparatus 1600 includes: a first sending module 1601, configured to send first indication information to the network side device, the first indication information is used to indicate that the terminal has a CSI MAC CE that needs to be transmitted on the direct communication interface The first acquisition module 1602 is configured to acquire the direct communication interface resources allocated by the network side device, and use the direct communication interface resources to transmit the CSI MAC CE.

Wherein, the first indication information is transmitted in a MAC CE mode. For the specific content and format of the MAC CE, reference may be made to the description of the foregoing embodiment.

Optionally, the first sending module 1601 may include: a first determining submodule, configured to determine a target resource for sending the first indication information; a first sending submodule, configured to use the target resource to send the target resource to the The network side device sends the first instruction information.

Optionally, the first determining submodule is configured to, in the case that the direct communication interface currently has a suspended CSI MAC CE:

If the Uu interface has uplink resources, use the uplink resource of the Uu interface as the target resource;

If the Uu interface does not have uplink resources and the CSI MAC CE does not have a CSI MAC CE dedicated direct communication interface scheduling request Sidelink SR resource on the Uu interface, a random access process is initiated to the network side device, and the network side device obtains the random access The uplink resource of the Uu interface allocated by the access process is used, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Optionally, in the case that the Uu interface has uplink resources, if there is no Sidelink BSR to be sent at the transmission time corresponding to the uplink resource, the uplink resource of the Uu interface is used as the target resource;

In the case that the Uu interface does not have uplink resources and the CSI MAC CE does not have the CSI MAC CE dedicated Sidelink SR resources on the Uu interface, if the network side device allocates the Uu interface uplink resource corresponding to the transmission time through the random access process There is no Sidelink BSR to be sent, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Optionally, the uplink resources of the Uu interface meet the following conditions:

The difference between the time when the uplink resource of the Uu interface is located and the trigger time of the suspended CSI MAC CE is less than T3, where T3 is less than the delay limit of the suspended CSI MAC CE.

Optionally, when the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following:

The first indication information is located after the Configured Grant Confirmation MAC CE and before the BSR MAC CE; the first indication information is located after the C-RNTI MAC CE or UL CCCH data and before the Configured Grant Confirmation MAC CE.

The device provided in the embodiment of the present disclosure can execute the foregoing method embodiment, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.

The embodiment of the present disclosure also provides a resource request device, which is applied to a network side device. Refer to FIG. 17, which is a structural diagram of a resource request apparatus provided by an embodiment of the present disclosure. Since the principle of the resource request device to solve the problem is similar to the resource request method in the embodiment of the present disclosure, the implementation of the resource request device can refer to the implementation of the method, and the repetition will not be repeated.

As shown in FIG. 17, the resource request apparatus 1700 includes: a first receiving module 1701, configured to receive first indication information sent by a terminal, and the first indication information is used to indicate that the terminal has a CSI MAC CE requirement on a direct communication interface. Transmission; a first allocation module 1702, configured to allocate direct communication interface resources for the terminal according to the first indication information.

Wherein, the first indication information is transmitted in a MAC CE mode. For the specific content and format of the MAC CE, reference may be made to the description of the foregoing embodiment.

Optionally, the first allocation module allocates direct communication interface resources to the terminal according to at least one of the following information:

The number of CSI MAC CE currently suspended on the direct communication interface; the destination address of the direct communication interface corresponding to the CSI MAC CE currently suspended on the direct communication interface; the size of the direct communication interface CSI MAC CE; the scheduling of the direct communication interface CSI MAC CE Delay request.

The device provided in the embodiment of the present disclosure can execute the foregoing method embodiment, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.

The embodiment of the present disclosure also provides a resource request device, which is applied to a network side device. As shown in FIG. 18, the resource requesting device of the embodiment of the present disclosure includes: a processor 1800, configured to read a program in a memory 1820, and execute the following process:

Receiving first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface;

According to the first indication information, direct communication interface resources are allocated to the terminal.

The transceiver 1810 is used to receive and send data under the control of the processor 1800.

Wherein, in FIG. 18, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1800 and various circuits of the memory represented by the memory 1820 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1810 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on the transmission medium. The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 can store data used by the processor 1800 when performing operations.

The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 can store data used by the processor 1800 when performing operations.

Wherein, the first indication information is transmitted in a MAC CE mode.

The processor 1800 is further configured to read the program and execute the following steps:

According to at least one of the following information, direct communication interface resources are allocated to the terminal:

The number of CSI MAC CE currently suspended on the direct communication interface;

The destination address of the direct communication interface corresponding to the currently suspended CSI MAC CE of the direct communication interface;

The size of the direct communication interface CSI MAC CE;

Direct communication interface CSI MAC CE scheduling delay requirements.

The device provided in the embodiment of the present disclosure can execute the foregoing method embodiment, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.

The embodiment of the present disclosure also provides a resource request device, which is applied to a terminal. As shown in FIG. 19, the resource request device of the embodiment of the present disclosure includes: a processor 1900, configured to read a program in a memory 1920, and execute the following process:

Sending first indication information to the network side device, where the first indication information is used to indicate that the terminal has a channel state indication on the direct communication interface that the media access control control unit CSI MAC CE needs to be transmitted;

Acquire the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE.

The transceiver 1910 is used to receive and send data under the control of the processor 1900.

Wherein, in FIG. 19, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1900 and various circuits of the memory represented by the memory 1920 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1910 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 1930 may also be an interface capable of externally connecting internally required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1900 is responsible for managing the bus architecture and general processing, and the memory 1920 can store data used by the processor 1900 when performing operations.

Wherein, the first indication information is transmitted in a MAC CE mode.

Wherein, any one of the following methods is used to identify the MAC CE:

The MAC subheader corresponding to the MAC CE carries the target logical channel identifier LCID;

The MAC subheader corresponding to the MAC CE carries the LCID corresponding to the direct communication interface Sidelink BSR MAC CE, and the MAC subheader carries second indication information, and the second indication information is used to indicate the content transmitted by the MAC CE Is it Sidelink BSR MAC CE or the first indication information.

Wherein, third indication information is carried in the MAC subheader, and the third indication information is used to indicate the number and type of the CSI MAC CE currently suspended on the direct communication interface, or the MAC subheader carries the fourth indication information. Indication information, the fourth indication information is used to indicate the specific number of CSI MAC CE currently suspended by the direct communication interface, where the number type includes one or more than one.

Wherein, the content of the MAC CE is any one of the following:

Is empty;

It is the direct communication destination address and/or scheduling delay requirement corresponding to the CSI MAC CE with the highest priority or the most urgent scheduling requirement among the CSI MAC CE currently suspended on the direct communication interface of the terminal;

Is the number of all CSI MAC CE currently suspended on the terminal's direct communication interface;

It is the direct communication destination address and/or scheduling delay requirement corresponding to each CSI MAC CE currently suspended on the terminal direct communication interface.

Wherein, the length of the MAC CE is a variable length, and the MAC subheader corresponding to the MAC CE carries a length indicator field, and the length indicator field is used to indicate the length of the MAC CE.

Wherein, the scheduling delay requirement is determined as follows:

Determine the time difference T1 between the start time of the uplink resource corresponding to the first indication information and the trigger time of each CSI MAC CE;

Determine the difference T2 between the delay limit of each CSI MAC CE and the T1;

The quantized value of T2 or T2 is used as the scheduling delay requirement.

Wherein, the trigger condition of the first indication information is:

The direct communication interface has a suspended CSI MAC CE and the Uu interface has no available uplink resources; or,

The direct communication interface has a suspended CSI MAC CE, and the Uu interface has available uplink resources, but it does not meet the CSI MAC CE transmission delay limit; or,

The direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resources, and there is no Sidelink BSR trigger; or,

The direct communication interface has a suspended CSI MAC CE, the Uu interface has available uplink resources but does not meet the CSI MAC CE transmission delay limit, and there is no Sidelink BSR trigger.

Wherein, the cancellation condition of the first indication information is that the direct communication interface is triggered by a Sidelink BSR; or, the first indication information is transmitted.

The processor 1900 is further configured to read the program and execute the following steps:

Determining a target resource for sending the first indication information;

Sending the first indication information to the network side device by using the target resource.

The processor 1900 is further configured to read the program and execute the following steps:

When the direct communication interface currently has a suspended CSI MAC CE:

If the Uu interface has uplink resources, use the uplink resource of the Uu interface as the target resource;

If the Uu interface does not have uplink resources and the CSI MAC CE does not have the CSI MAC CE dedicated direct communication interface Sidelink SR resources on the Uu interface, initiate a random access process to the network side device, and obtain the network side device through random access The uplink resource of the Uu interface allocated by the process, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Wherein, in the case that the Uu interface has uplink resources, if there is no Sidelink BSR to be sent at the transmission time corresponding to the uplink resource, the uplink resource of the Uu interface is used as the target resource;

In the case that the Uu interface does not have uplink resources and the CSI MAC CE does not have the CSI MAC CE dedicated Sidelink SR resources on the Uu interface, if the network side device allocates the Uu interface uplink resource corresponding to the transmission time through the random access process There is no Sidelink BSR to be sent, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource.

Wherein, the uplink resources of the Uu interface meet the following conditions:

The difference between the time when the uplink resource of the Uu interface is located and the trigger time of the suspended CSI MAC CE is less than T3, where T3 is less than the delay limit of the suspended CSI MAC CE.

Wherein, when the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following:

The first indication information is located after Configured Grant Confirmation MAC CE and before BSR MAC CE;

The first indication information is located after C-RNTI MAC CE or uplink common control channel UL CCCH data and before Configured Grant Confirmation MAC CE.

The device provided in the embodiment of the present disclosure can execute the foregoing method embodiment, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.

The embodiments of the present disclosure also provide a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the above-mentioned resource request method embodiment is realized, and the same technology can be achieved. The effect, in order to avoid repetition, will not be repeated here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 According to this understanding, the technical solution of the present disclosure can be embodied in the form of a software product in essence or a part that contributes to the related technology. The computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present disclosure.

It can be understood that the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the units, modules, sub-units and sub-modules can be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (Digital Signal Processing, DSP), and digital signal processing equipment (DSP Device). , DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, Disclosure of the described functions in other electronic units or combinations thereof.

For software implementation, the technology described in the embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, many forms can be made without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which fall within the protection of the present disclosure.

Claims (41)

A resource request method, applied to a terminal, includes: Sending first indication information to the network side device, where the first indication information is used to indicate that the terminal has a channel state indication on the direct communication interface that the media access control control unit CSI MAC CE needs to be transmitted; Acquire the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE. The method according to claim 1, wherein the first indication information is transmitted in a medium access control control unit MAC CE. According to the method of claim 2, the MAC CE is identified in any of the following ways: The MAC subheader MAC subheader corresponding to the MAC CE carries the target logical channel identifier LCID; The MAC subheader corresponding to the MAC CE carries the LCID corresponding to the direct communication interface buffer status report Sidelink BSR MAC CE, and the MAC subheader carries second indication information, and the second indication information is used to indicate the MAC CE The content of the transmission is Sidelink, BSR, MAC, CE or the first indication information. The method of claim 3, wherein: The MAC subheader carries third indication information, and the third indication information is used to indicate the number and type of CSI MAC CE currently suspended on the direct communication interface, or the MAC subheader carries fourth indication information The fourth indication information is used to indicate the specific number of CSI MAC CE currently suspended on the direct communication interface, where the number type includes one or more than one. The method according to claim 2, wherein the content of the MAC CE is any one of the following: Is empty; It is the direct communication destination address and/or scheduling delay requirement corresponding to the CSI MAC CE with the highest priority or the most urgent scheduling requirement among the CSI MAC CE currently suspended on the direct communication interface of the terminal; Is the number of all CSI MAC CE currently suspended on the terminal's direct communication interface; It is the direct communication destination address and/or scheduling delay requirement corresponding to each CSI MAC CE currently suspended on the terminal direct communication interface. The method according to claim 5, wherein the length of the MAC CE is a variable length, and the MAC subheader corresponding to the MAC CE carries a length indicator field, and the length indicator field is used to indicate the MAC CE length. The method according to claim 5, wherein the scheduling delay requirement is determined as follows: Determine the time difference T1 between the start time of the uplink resource corresponding to the first indication information and the trigger time of each CSI MAC CE; Determine the difference T2 between the delay limit of each CSI MAC CE and the T1; The quantized value of T2 or T2 is used as the scheduling delay requirement. The method according to claim 1, wherein the trigger condition of the first indication information is: The direct communication interface has a suspended CSI MAC CE and the Uu interface has no available uplink resources; or, The direct communication interface has a suspended CSI MAC CE, and the Uu interface has available uplink resources, but it does not meet the CSI MAC CE transmission delay limit; or, The direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resources, and there is no Sidelink BSR trigger; or, The direct communication interface has a suspended CSI MAC CE, the Uu interface has available uplink resources but does not meet the CSI MAC CE transmission delay limit, and there is no Sidelink BSR trigger. The method according to claim 1, wherein the cancellation condition of the first indication information is that the direct communication interface is triggered by a Sidelink BSR; or, the first indication information is transmitted. The method according to claim 1, wherein the sending the first indication information to the network side device comprises: Determining a target resource for sending the first indication information; Sending the first indication information to the network side device by using the target resource. The method according to claim 10, wherein said determining a target resource for sending said first indication information comprises: When the direct communication interface currently has a suspended CSI MAC CE: If the Uu interface has uplink resources, use the uplink resource of the Uu interface as the target resource; If the Uu interface does not have uplink resources and the CSI MAC CE does not have a CSI MAC CE dedicated direct communication interface scheduling request Sidelink SR resource on the Uu interface, a random access process is initiated to the network side device, and the network side device obtains the random access The uplink resource of the Uu interface allocated by the access process is used, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource. The method according to claim 11, wherein: In the case that the Uu interface has uplink resources, if no Sidelink BSR needs to be sent at the transmission time corresponding to the uplink resource, use the uplink resource of the Uu interface as the target resource; In the case that the Uu interface does not have uplink resources and the CSI MAC CE does not have the CSI MAC CE dedicated Sidelink SR resources on the Uu interface, if the network side device allocates the Uu interface uplink resource corresponding to the transmission time through the random access process There is no Sidelink BSR to be sent, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource. The method according to claim 12, wherein the uplink resources of the Uu interface meet the following conditions: The difference between the time when the uplink resource of the Uu interface is located and the trigger time of the suspended CSI MAC CE is less than T3, where T3 is less than the delay limit of the suspended CSI MAC CE. The method according to claim 1, wherein when the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following: The first indication information is located after the pre-configuration authorization confirmation Configured Grant Confirmation MAC CE and before the BSR MAC CE; The first indication information is located after the cell radio network temporary identifier C-RNTI MAC CE or uplink common control channel UL CCCH data and before Configured Grant Confirmation MAC CE. A resource request method, applied to a network side device, includes: Receiving first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface; According to the first indication information, direct communication interface resources are allocated to the terminal. The method according to claim 15, wherein the first indication information is transmitted by means of MAC CE. The method according to claim 15, wherein the allocating direct communication interface resources to the terminal according to the first indication information comprises: According to at least one of the following information, direct communication interface resources are allocated to the terminal: The number of CSI MAC CE currently suspended on the direct communication interface; The destination address of the direct communication interface corresponding to the currently suspended CSI MAC CE of the direct communication interface; The size of the direct communication interface CSI MAC CE; Direct communication interface CSI MAC CE scheduling delay requirements. A resource request device, applied to a terminal, includes: The first sending module is configured to send first indication information to the network side device, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface; The first obtaining module is configured to obtain the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE. The resource request device according to claim 18, wherein the first sending module comprises: The first determining submodule is configured to determine the target resource for sending the first indication information; The first sending submodule is configured to send the first indication information to the network side device by using the target resource. The resource request device according to claim 19, wherein the first determining submodule is configured to, in the case that the direct communication interface currently has a suspended CSI MAC CE: If the Uu interface has uplink resources, use the uplink resource of the Uu interface as the target resource; If the Uu interface does not have uplink resources and the CSI MAC CE does not have a CSI MAC CE dedicated direct communication interface scheduling request Sidelink SR resource on the Uu interface, a random access process is initiated to the network side device, and the network side device obtains the random access The uplink resource of the Uu interface allocated by the access process is used, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource. The resource request device according to claim 18, wherein, when the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following: The first indication information is located after the Configured Grant Confirmation MAC CE and before the BSR MAC CE; the first indication information is located after the C-RNTI MAC CE or UL CCCH data and before the Configured Grant Confirmation MAC CE. A resource request device applied to a network side device, which includes: The first receiving module is configured to receive first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface; The first allocation module is configured to allocate direct communication interface resources to the terminal according to the first indication information. The resource request device according to claim 22, wherein the first allocation module allocates direct communication interface resources to the terminal according to at least one of the following information: The number of CSI MAC CE currently suspended on the direct communication interface; the destination address of the direct communication interface corresponding to the CSI MAC CE currently suspended on the direct communication interface; the size of the direct communication interface CSI MAC CE; the scheduling of the direct communication interface CSI MAC CE Delay request. A resource request device applied to a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and running on the processor; wherein, The processor is used to read the program in the memory and execute the following process: Sending first indication information to the network side device, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface; Acquire the direct communication interface resource allocated by the network side device, and use the direct communication interface resource to transmit the CSI MAC CE. The device according to claim 24, wherein the first indication information is transmitted by means of MAC CE. The device according to claim 25, wherein the MAC CE is identified by any one of the following methods: The MAC subheader corresponding to the MAC CE carries the target LCID; The MAC subheader corresponding to the MAC CE carries the LCID corresponding to the Sidelink BSR MAC CE, and the MAC subheader carries second indication information, and the second indication information is used to indicate that the content transmitted by the MAC CE is a Sidelink BSR The MAC CE is also the first indication information. The device according to claim 26, wherein third indication information is carried in the MAC subheader, and the third indication information is used to indicate the number and type of CSI MAC CE currently suspended on the direct communication interface, or, The MAC subheader carries fourth indication information, and the fourth indication information is used to indicate the specific number of CSI MAC CE currently suspended on the direct communication interface, where the number type includes one or more than one . The device according to claim 25, wherein the content of the MAC CE is any one of the following: Is empty; It is the direct communication destination address and/or scheduling delay requirement corresponding to the CSI MAC CE with the highest priority or the most urgent scheduling requirement among the CSI MAC CE currently suspended on the direct communication interface of the terminal; Is the number of all CSI MAC CE currently suspended on the terminal's direct communication interface; It is the direct communication destination address and/or scheduling delay requirement corresponding to each CSI MAC CE currently suspended on the terminal direct communication interface. The device according to claim 28, wherein the length of the MAC CE is a variable length, and a MAC subheader corresponding to the MAC CE carries a length indicator field, and the length indicator field is used to indicate the length of the MAC CE length. The device according to claim 28, wherein the scheduling delay requirement is determined as follows: Determine the time difference T1 between the start time of the uplink resource corresponding to the first indication information and the trigger time of each CSI MAC CE; Determine the difference T2 between the delay limit of each CSI MAC CE and the T1; The quantized value of T2 or T2 is used as the scheduling delay requirement. The device according to claim 24, wherein the trigger condition of the first indication information is: The direct communication interface has a suspended CSI MAC CE and the Uu interface has no available uplink resources; or, The direct communication interface has a suspended CSI MAC CE, and the Uu interface has available uplink resources, but it does not meet the CSI MAC CE transmission delay limit; or, The direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resources, and there is no Sidelink BSR trigger; or, The direct communication interface has a suspended CSI MAC CE, and the Uu interface has available uplink resources but does not meet the CSI MAC CE transmission delay limit, and there is no Sidelink BSR trigger. The device according to claim 24, wherein the cancellation condition of the first indication information is that the direct communication interface is triggered by a Sidelink BSR; or, the first indication information is transmitted. The device according to claim 24, wherein the processor is further configured to read the program in the memory and execute the following process: Determining a target resource for sending the first indication information; Sending the first indication information to the network side device by using the target resource. The device according to claim 33, wherein the processor is further configured to read a program in the memory and execute the following process: When the direct communication interface currently has a suspended CSI MAC CE: If the Uu interface has uplink resources, use the uplink resource of the Uu interface as the target resource; If the Uu interface does not have uplink resources and the CSI MAC CE does not have CSI MAC CE dedicated Sidelink SR resources on the Uu interface, initiate a random access process to the network side device, and obtain the network side device allocated through the random access process The uplink resource of the Uu interface, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource. The device according to claim 34, wherein the processor is further configured to read a program in the memory and execute the following process: In the case that the Uu interface has uplink resources, if no Sidelink BSR needs to be sent at the transmission time corresponding to the uplink resource, use the uplink resource of the Uu interface as the target resource; In the case that the Uu interface does not have uplink resources and the CSI MAC CE does not have the CSI MAC CE dedicated Sidelink SR resources on the Uu interface, if the network side device allocates the Uu interface uplink resource corresponding to the transmission time through the random access process There is no Sidelink BSR to be sent, and the uplink resource of the Uu interface allocated by the network side device is used as the target resource. The device according to claim 35, wherein the uplink resource of the Uu interface meets the following conditions: The difference between the time when the uplink resource of the Uu interface is located and the trigger time of the suspended CSI MAC CE is less than T3, where T3 is less than the delay limit of the suspended CSI MAC CE. The device according to claim 24, wherein, when the Uu interface performs priority processing of the uplink logical channel, the priority determination method of the first indication information includes any one of the following: The first indication information is located after Configured Grant Confirmation MAC CE and before BSR MAC CE; The first indication information is located after the C-RNTI MAC CE or UL CCCH data and before the Configured Grant Confirmation MAC CE. A resource request device applied to a network side device, including: a transceiver, a memory, a processor, and a program stored on the memory and running on the processor; wherein, Receiving first indication information sent by the terminal, where the first indication information is used to indicate that the terminal has a CSI MAC CE to be transmitted on the direct communication interface; According to the first indication information, direct communication interface resources are allocated to the terminal. The device according to claim 38, wherein the first indication information is transmitted by means of MAC CE. The device according to claim 38, wherein the processor is further configured to read the program in the memory and execute the following process: According to at least one of the following information, direct communication interface resources are allocated to the terminal: The number of CSI MAC CE currently suspended on the direct communication interface; The destination address of the direct communication interface corresponding to the currently suspended CSI MAC CE of the direct communication interface; The size of the direct communication interface CSI MAC CE; Direct communication interface CSI MAC CE scheduling delay requirements. A computer-readable storage medium for storing a computer program, wherein when the computer program is executed by a processor, the steps in the resource request method according to any one of claims 1 to 14 are implemented, or the When the computer program is executed by the processor, the steps in the resource request method according to any one of claims 15 to 17 are implemented.

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