CN113411833B

CN113411833B - Resource request method, device, equipment and storage medium

Info

Publication number: CN113411833B
Application number: CN202010185937.6A
Authority: CN
Inventors: 赵亚利
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2023-02-21
Anticipated expiration: 2040-03-16
Also published as: WO2021184887A1; CN113411833A

Abstract

The invention discloses a resource request method, a resource request device, a resource request equipment and a storage medium, relates to the technical field of communication, and aims to solve the problem that a direct communication interface cannot request a network for direct communication interface resources when only CSI MAC CE needs to be sent. The method comprises the following steps: sending first indication information to network side equipment, wherein the first indication information is used for indicating that a terminal has CSI MAC CE to be transmitted on a direct communication interface; and acquiring direct communication interface resources allocated by the network side equipment, and transmitting the CSI MAC CE by using the direct communication interface resources. The embodiment of the invention can realize that the direct communication interface resource is requested to the network when only the CSI MAC CE needs to be sent by the direct communication interface.

Description

Resource request method, device, equipment and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a resource request method, apparatus, device, and storage medium.

Background

For more efficient communication, direct communication between terminals is introduced. For convenience of description, a direct communication link between terminals is defined as a Sidelink link (which may also be referred to as a bypass), and a corresponding wireless interface thereof is referred to as a direct communication interface (which is also referred to as a Sidelink interface or a bypass interface); a cellular communication link between the network side device and the terminal is referred to as a Uu link, and a corresponding interface thereof is referred to as a Uu interface. As shown in fig. 1, UE1 and UE2 communicate directly via a Sidelink link, and UE1 and UE2 communicate with a network device via a uulink link.

For direct communication, in order for UE1 to know the Channel quality of the direct communication interface between UE1 and UE2, UE2 needs to feed back CSI (Channel State Information) to UE 1. The CSI is transmitted through a CSI MAC (Media Access Control) CE (Control Element).

For CSI MAC CE, the physical layer introduces a delay bound, i.e., latency bound, to it.

For a terminal in which a Uu interface is in an RRC (Radio Resource Control) connected state and a direct communication interface uses a Resource allocation mode scheduled by a network, a conventional direct communication interface Resource request process is as follows:

(1) A terminal sends a Scheduling Request (Scheduling SR) to a network;

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

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

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

However, for the direct interface terminal, if only CSI MAC CE needs to transmit, it will not trigger the Sidelink BSR, and therefore, the terminal cannot acquire the resources of the direct communication interface through the above conventional direct communication interface resource request procedure.

Disclosure of Invention

Embodiments of the present invention provide a resource request method, apparatus, device, and storage medium, to solve the problem that a direct communication interface cannot request a network for a direct communication interface resource when only a CSI MAC CE needs to be sent.

In a first aspect, an embodiment of the present invention provides a resource request method, applied to a terminal, including:

sending first indication information to network side equipment, wherein the first indication information is used for indicating that a terminal has CSI MAC CE to be transmitted on a direct communication interface;

and acquiring direct communication interface resources distributed by the network side equipment, and transmitting the CSI MAC CE by using the direct communication interface resources.

Wherein the first indication information is transmitted by using a mode of MAC CE.

Wherein, the MAC CE is identified by adopting any one of the following modes:

a target Logical Channel Identifier (LCID) is carried in an MAC subheader (subheader) corresponding to the MAC CE;

the MAC subheader corresponding to the MAC CE carries an LCID corresponding to a direct communication interface, sidelink BSR MAC CE, and carries second indication information in the MAC subheader, where the second indication information is used to indicate whether content transmitted by the MAC CE is the Sidelink BSR MAC CE or the first indication information.

The MAC subheader carries third indication information, where the third indication information is used to indicate a number type of CSI MAC CEs currently suspended by the direct communication interface, or the MAC subheader carries fourth indication information, where the fourth indication information is used to indicate a specific number of CSI MAC CEs 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;

the method comprises the steps of obtaining a direct communication destination address and/or scheduling delay requirement corresponding to a CSI MAC CE which has the highest priority or has the most urgent scheduling requirement among CSI MAC CEs currently suspended by a terminal direct communication interface;

the number of all CSI MAC CEs currently suspended for a terminal direct communication interface;

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

The length of the MAC CE is variable, and a length indication field is carried in a MAC sub corresponding to the MAC CE, where the length indication field is used to indicate the length of the MAC CE.

Wherein the scheduling delay requirement is determined as follows:

determining a time difference T1 between the starting time of the uplink resource corresponding to the first indication information and the triggering time of each CSI MAC CE;

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

and taking the quantized value of the T2 or the T2 as the scheduling delay requirement.

Wherein the triggering 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 resource; or,

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

the direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resource and has 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 time delay limit of CSI MAC CE transmission, and no Sidelink BSR trigger exists.

Wherein, the cancellation condition of the first indication information is that a direct communication interface is triggered by a Sildelink 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;

and sending the first indication information to the network side equipment by using the target resource.

Wherein the determining a target resource for transmitting the first indication information includes:

in case the direct communication interface currently has a CSI MAC CE pending:

if the Uu interface has uplink resources, taking the uplink resources of the Uu interface as the target resources;

if the Uu interface has no uplink resource and the CSI MAC CE has no direct communication interface Sidelink SR (Scheduling Request) resource dedicated to the CSI MAC CE on the Uu interface, initiating a random access process to the network side device, obtaining the uplink resource of the Uu interface allocated by the network side device through the random access process, and taking the uplink resource of the Uu interface allocated by the network side device as the target resource.

Under the condition that a Uu interface has uplink resources, if no Silelink BSR needs to be sent at the transmission time corresponding to the uplink resources, taking the uplink resources of the Uu interface as the target resources;

and under the condition that the Uu interface has no uplink resource and the CSI MAC CE has no Sidelink SR resource dedicated to the CSI MAC CE on the Uu interface, if the network side equipment has no Sidelink BSR to send at the transmission time corresponding to the uplink resource of the Uu interface allocated by the random access process, taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource.

Wherein, the uplink resource of the Uu interface meets the following conditions:

and the difference value between the time of the uplink resource of the Uu interface and the trigger time of the suspended CSI MAC CE is smaller than T3, wherein T3 is smaller than the time delay limit of the suspended CSI MAC CE.

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

the first indication information is located after a Configured Grant configuration (pre-Configured authorization acknowledgement) MAC CE and before a BSR MAC CE;

the first indication information is located after C-RNTI (Cell RNTI, cell radio network temporary identity) MAC CE or uplink Common Control Channel (UL CCCH) data and before Configured Grant configuration MAC CE.

In a second aspect, an embodiment of the present invention provides a resource request method, applied to a network side device, including:

receiving first indication information sent by a terminal, wherein the first indication information is used for indicating that the terminal has CSI MAC CE to be transmitted on a direct communication interface;

and allocating direct communication interface resources to the terminal according to the first indication information.

Wherein, the allocating, according to the first indication information, a direct communication interface resource to the terminal includes:

allocating direct communication interface resources for the terminal according to at least one of the following information:

the number of CSI MAC CEs currently suspended by the direct communication interface;

a direct communication interface destination address corresponding to the CSI MAC CE on which the direct communication interface is currently suspended;

size of a direct communication interface CSI MAC CE;

scheduling delay requirements of the direct communication interface CSI MAC CE.

In a third aspect, an embodiment of the present invention provides a resource request apparatus, which is applied to a terminal, and is characterized by including:

the first sending module is used for sending first indication information to network side equipment, wherein the first indication information is used for indicating that a terminal has CSI MAC CE needing to be transmitted on a direct communication interface;

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

In a fourth aspect, an embodiment of the present invention provides a resource request apparatus, which is applied to a network side device, and includes:

the first receiving module is used for receiving first indication information sent by a terminal, wherein the first indication information is used for indicating that the terminal has CSI MAC CE needing to be transmitted on a direct communication interface;

and the first allocation module is used for allocating direct communication interface resources to the terminal according to the first indication information.

In a fifth aspect, an embodiment of the present invention provides 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 executable on the processor;

the processor is used for reading the program in the memory and executing the following processes:

sending first indication information to network side equipment, wherein the first indication information is used for indicating that a terminal has CSI MAC CE needing to be transmitted on a direct communication interface;

Wherein, the MAC CE is identified by adopting any one of the following modes:

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

the MAC subheader corresponding to the MAC CE carries an LCID corresponding to a Sidelink BSR MAC CE, and carries second indication information in the MAC subheader, wherein the second indication information is used for indicating whether the content transmitted by the MAC CE is the Sidelink BSR MAC CE or the first indication information.

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

is empty;

the number of all CSI MAC CEs currently suspended for the terminal direct communication interface;

The length of the MAC CE is variable, and a length indication field is carried in a MAC sub header corresponding to the MAC CE, where the length indication field is used to indicate the length of the MAC CE.

Wherein the scheduling delay requirement is determined as follows:

Wherein the trigger condition of the first indication information is:

the direct communication interface has a suspended CSI MAC CE, the Uu interface has available uplink resources, but the time delay limit of CSI MAC CE transmission is not met; or,

Wherein the processor is further configured to read the program in the memory and execute the following processes:

determining a target resource for sending the first indication information;

in case the direct communication interface currently has a CSI MAC CE pending:

if the Uu interface has no uplink resource and the CSI MAC CE has no Sidelink SR resource dedicated to the CSI MAC CE on the Uu interface, initiating a random access process to the network side equipment, acquiring the uplink resource of the Uu interface allocated by the network side equipment through the random access process, and taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource.

under the condition that a Uu interface has uplink resources, if no Sidelink BSR needs to be sent at the transmission time corresponding to the uplink resources, taking the uplink resources of the Uu interface as the target resources;

and under the condition that the Uu interface has no uplink resource and the CSI MAC CE has no Sidelink SR resource special for the CSI MAC CE on the Uu interface, if no Sidelink BSR needs to be transmitted at the transmission time corresponding to the uplink resource of the Uu interface allocated by the network side equipment through the random access process, taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource.

the first indication information is located after the Configured Grant configuration 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 configuration MAC CE.

In a sixth aspect, an embodiment of the present invention provides a resource request device, which is applied to a network side device, and includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; receiving first indication information sent by a terminal, wherein the first indication information is used for indicating that the terminal has CSI MAC CE to be transmitted on a direct communication interface;

the number of the CSI MAC CEs currently suspended by the direct communication interface;

size of a direct communication interface CSI MAC CE;

scheduling delay requirements of the direct communication interface CSI MAC CE.

In a seventh aspect, the present invention provides a computer-readable storage medium for storing a computer program, where the computer program implements the steps in the resource request method according to the first aspect when executed by a processor, or implements the steps in the resource request method according to the second aspect when executed by the processor.

In the embodiment of the invention, when the direct communication interface has CSI MAC CE to be transmitted, the indication information can be sent to the network side equipment, so that the network side equipment allocates the direct communication interface resource according to the indication information. Therefore, with the solution of the embodiment of the present invention, when the direct communication interface only needs to send the CSI MAC CE, the terminal may request the network for the direct communication interface resource using the first indication information.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic diagram of prior art direct communication;

FIG. 2 is a flowchart of a resource request method according to an embodiment of the present invention;

FIG. 3 is a second flowchart of a resource request method according to an embodiment of the present invention;

fig. 4 to 14 are schematic diagrams of MAC headers in the embodiments of the present invention, respectively;

FIG. 15 is a third flowchart of a resource request method according to an embodiment of the present invention;

fig. 16 is a diagram illustrating one of the structures of a resource request device according to an embodiment of the present invention;

fig. 17 is a second block diagram of a resource request device according to an embodiment of the present invention;

fig. 18 is one of the structural diagrams of a resource request device according to an embodiment of the present invention;

fig. 19 is a second block diagram of a resource request device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.

Referring to fig. 2, fig. 2 is a flowchart of a resource request method provided by an embodiment of the present invention, and is applied to a terminal, as shown in fig. 2, including the following steps:

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

In this embodiment of the present invention, the first indication information is transmitted by using a MAC CE. Specifically, in the embodiment of the present invention, the MAC CE may be identified by any one of the following manners:

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

(2) The MAC subheader corresponding to the MAC CE carries an LCID corresponding to a Sidelink BSR MAC CE, and carries second indication information in the MAC subheader, wherein the second indication information is used for indicating whether the content transmitted by the MAC CE is the Sidelink BSR MAC CE or the first indication information.

Wherein the target LCID may be an LCID specific to the MAC CE agreed in a protocol.

In the above two manners, the MAC sub-header may further carry third indication information, where the third indication information is used to indicate a number type of CSI MAC CEs currently suspended by the direct communication interface, or the MAC sub-header may further carry fourth indication information, where the fourth indication information is used to indicate a specific number of CSI MAC CEs currently suspended by the direct communication interface, where the number type includes one or more than one.

In this embodiment of the present invention, the content of the MAC CE is any one of:

(1) Is empty;

(2) The method comprises the steps of obtaining a direct communication destination address and/or scheduling delay requirement corresponding to a CSI MAC CE which has the highest priority or has the most urgent scheduling requirement among CSI MAC CEs currently suspended by a terminal direct communication interface;

(3) The number of all CSI MAC CEs currently suspended for a terminal direct communication interface;

(4) And the terminal direct communication interface is provided with a direct communication destination address and/or a scheduling delay requirement corresponding to each CSI MAC CE which is currently suspended.

If the MAC CE content is the number of all CSI MAC CEs currently suspended by the terminal direct communication interface, or if the MAC CE content is the direct communication destination addresses and/or the scheduling delay requirements corresponding to all CSI MAC CEs currently suspended by the terminal direct communication interface, the length of the MAC CE is a variable length, and a length indication field (e.g., an L field) is carried in the MAC subheader corresponding to the MAC CE, where the length indication field is used to indicate the length of the MAC CE.

Wherein the scheduling delay requirement is determined as follows:

and determining a time difference T1 between the starting time of the uplink resource corresponding to the first indication information and the triggering time of each CSI MAC CE, and then determining a difference T2 between the delay limit of each CSI MAC CE and the T1. And then, taking the quantized value of the T2 or the T2 as the scheduling delay requirement. Wherein T1 and T2 are greater than 0.

In the embodiment of the present invention, the first indication information may be triggered when any one of the following conditions is satisfied:

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

(2) The direct communication interface has a suspended CSI MAC CE, the Uu interface has available uplink resources, but the time delay limit of CSI MAC CE transmission is not met;

(3) The direct communication interface has a suspended CSI MAC CE, the Uu interface has no available uplink resource and has 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 time delay limit of CSI MAC CE transmission, and no Sidelink BSR trigger exists.

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

In the embodiment of the present invention, a 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 determine whether the direct communication interface has a suspended CSI MAC CE. In the case that the direct communication interface currently has a CSI MAC CE on hold, the target resource may be determined as follows:

and if the Uu interface has uplink resources, taking the uplink resources of the Uu interface as the target resources. Further, when there is uplink resource on the Uu interface, if there is no Sidelink BSR to be transmitted at the transmission time corresponding to the uplink resource, the uplink resource on the Uu interface is used as the target resource.

And if the Uu interface has no uplink resource and the CSI MAC CE has no direct communication interface scheduling request Sidelink SR resource special for the CSI MAC CE on the Uu interface, initiating a random access process to the network side equipment, acquiring the uplink resource of the Uu interface allocated by the network side equipment through the random access process, and taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource. Further, when there is no uplink resource on the Uu interface and the CSI MAC CE has no scelink SR resource dedicated to the CSI MAC CE on the Uu interface, if there is no scelink BSR to be transmitted at the transmission time corresponding to the uplink resource on the Uu interface allocated by the network side device through the random access procedure, the uplink resource on the Uu interface allocated by the network side device is used as the target resource.

Wherein, the uplink resource of the Uu interface needs to satisfy the following conditions:

and the difference value between the time of the uplink resource of the Uu interface and the trigger time of the suspended CSI MAC CE is smaller than T3, wherein T3 is smaller than the time delay limit of the suspended CSI MAC CE. Wherein T3 is greater than 0.

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

the first indication information is located after the C-RNTI MAC CE or UL CCCH data and before a Configured Grant configuration MAC CE, wherein the Configured Grant configuration MAC CE may be a Configured Grant configuration MAC CE corresponding to a Uu link pre-configuration Grant and/or a Configured Grant configuration MAC CE corresponding to a direct communication interface pre-configuration Grant.

Step 202, obtaining a direct communication interface resource allocated by the network side device, and transmitting the CSI MAC CE using the direct communication interface resource.

Referring to fig. 3, fig. 3 is a flowchart of a resource request method provided in an embodiment of the present invention, which is applied to a terminal, and as shown in fig. 3, the method includes the following steps:

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

In the embodiment of the present invention, the first indication information is transmitted by using a MAC CE. The specific format and the included content of the MAC CE and the like can be referred to the description of the foregoing embodiments.

Step 302, according to the first indication information, allocating a direct communication interface resource to the terminal.

Specifically, when resource allocation is performed according to the first indication information, direct communication interface resources are allocated to the terminal according to at least one of the following information:

the number of CSI MAC CEs currently suspended by the direct communication interface; a direct communication interface destination address corresponding to the CSI MAC CE on which the direct communication interface is currently suspended; size of a direct communication interface CSI MAC CE; scheduling delay requirements of the direct communication interface CSI MAC CE.

For example, the size of the resource allocated to the direct communication interface is determined according to the size of the terminal direct communication interface CSI MAC CE, the number of the direct communication interface CSI MAC CE determines that several times of resources need to be allocated to the direct communication interface in the time domain, the specific time of resource allocation is determined according to the scheduling delay of the direct communication interface CSI MAC CE, and the destination address allocated to the direct communication interface is determined according to the destination address of the direct communication interface.

In the embodiment of the invention, a new MAC CE is defined, and the terminal requests the network for the special resource of the CSI MAC CE through the new MAC CE. In the embodiment of the present invention, the new MAC CE is referred to as a "resource request MAC CE".

The following describes an implementation process of the resource request method according to the embodiment of the present invention with reference to different embodiments.

As shown in fig. 4, the resource request method according to the embodiment of the present invention includes:

step 401, the terminal performs triggering judgment of the CSI MAC CE.

When the terminal receives SCI (Sidelink Control Information, direct communication interface Control Information), if the SCI carries CSI indication, the CSI MAC CE is triggered. The CSI MAC CE is in a suspended state after being triggered.

Step 402, the terminal obtains the resource of the MAC CE requesting the sending resource.

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

and (I) if the Uu interface has uplink resources, the terminal determines the uplink resources of the Uu interface as the resources for sending the resource request MAC CE.

(II) if the Uu interface has no uplink resource, the CSI MAC CE triggers Sidelink SR, and the terminal further judges whether the CSI MAC CE has a special SR resource at the Uu interface:

(1) And if so, requesting the transmission resource of the CSI MAC CE through the dedicated SR resource. The network side equipment receives the SR and allocates direct communication resources for a terminal direct communication interface, and the terminal can transmit the CSI MAC CE by using the direct communication resources;

(2) If not, the terminal needs to initiate a Random Access (RA) SR. And the network side equipment allocates uplink resources of the Uu interface for 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.

Further, in the above process, the uplink resource of the Uu interface may be determined to be a resource for transmitting the CSI MAC CE resource request MAC CE only if the uplink resource of the Uu interface has to satisfy the following condition: and the time difference between the time of the uplink resource of the Uu interface and the triggering time of the CSI MAC CE is less than T3, and the value of T3 is less than the time delay limit of the CSI MAC CE.

And step 403, the terminal sends the 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:

mode 1: the resource request MAC CE has a fixed length, which is 0. The resource request MAC CE is identified by a MAC sub that carries a specific LCID. The specific LCID is agreed in a protocol, and an LCID dedicated to the MAC CE is requested for the resource.

The MAC subheader corresponding to the resource request MAC CE is shown in fig. 5, where the resource request MAC CE has a fixed length and a length of 0bit.

Mode 2: the resource request MAC CE has a fixed length, which is 0. The resource request MAC CE is identified by an MAC sub-header carrying a specific LCID, and indicates whether the number of CSI MAC CEs suspended by the current direct communication interface of the terminal is one or more than one (only one bit is needed) in the MAC sub-header, or indicates the specific number of CSI MAC CEs suspended by the current direct communication interface of the terminal (a plurality of bits are needed) in the MAC sub-header. At the time of the specific indication, the indication may be performed by using a reserved bit field (R field) in the current MAC subheader.

The MAC subheaders corresponding to the resource request MAC CEs are shown in fig. 6, where one R bit may be used to indicate whether the number of CSI MAC CEs suspended by the current direct communication interface is one or more, for example, if the value of the R bit is 0, the number of CSI MAC CEs represents one; and if the value of the R bit is 1, more than one is represented. Certainly, 2R bits can also be used to indicate at most 4 CSI MAC CEs, and an RR value of 00 represents a suspended CSI MAC CE; RR of 01 represents two pending CSI MAC CEs, and so on. The CSI MAC CE is of a fixed length and is 0bit.

Mode 3: the resource request MAC CE is of a fixed length or a variable length, and the specific length depends on the number of CSI MAC CEs currently suspended on the terminal direct communication interface. The resource request MAC CE is identified by a MAC sub-header carrying a specific LCID. If the resource request MAC CE is variable in length, the length of the resource request MAC CE also needs to be indicated in the MAC subheader by a length indication field (e.g., L field).

If the length of the resource request MAC CE is fixed, the MAC sub-header corresponding to the resource request MAC CE is as shown in FIG. 7; if the length of the resource request MAC CE is variable, the MAC sub-header corresponding to the resource request MAC CE is shown in fig. 8, where the L field indicates the specific length of the resource request MAC CE.

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

For the resource request MAC CE, the resource request MAC CE uses a fixed length, and assuming that the CSI MAC CE number indication information occupies 6 bits, the resource request MAC CE may be, for example, as shown in fig. 9, but in actual application, the number of bits occupied by the CSI MAC CE number indication information may take other values.

Mode 4: the resource request MAC CE is of a fixed length, the content of the resource request MAC CE only comprises the scheduling delay requirement of the CSI MAC CE which has the highest priority or has the most urgent scheduling requirement in all the current suspended CSI MAC CEs, and the resource request MAC CE is identified by the MAC subheader carrying the specific LCID.

The calculation mode of the scheduling delay requirement is as follows: determining a time difference T1 between the current time (the time of sending the resource request MAC CE) and the triggering time of each CSI MAC CE, then determining a difference T2 between the time delay limit of each CSI MAC CE and the T1, and taking the quantized value of the T2 or the T2 as the scheduling time delay requirement.

The MAC subheader corresponding to the resource request MAC CE is shown in fig. 10. The resource request MAC CE is of a fixed length, and is assumed to be 1byte, and the scheduling delay requirement of the CSI MAC CE is assumed to occupy 6 bits, which is specifically shown in fig. 11, but in actual application, other bit numbers may be used for the scheduling delay requirement.

Mode 5: the resource request MAC CE is variable in length, the content of the resource request MAC CE only comprises scheduling delay requirements of CSI MAC CEs of all currently suspended CSI MAC CEs, the resource request MAC CE is identified by an MAC sub header carrying a specific LCID, and the length of the MAC CE is indicated by an L domain.

The subheader format corresponding to the resource request MAC CE is shown in fig. 12. The resource request MAC CE is variable in length, as shown in fig. 13, the scheduling delay requirement occupies 4 bits, but in practical application, the scheduling delay requirement may use other bits.

Mode 6: and the LCID corresponding to the Sidelink BSR MAC CE is carried in the MAC sub-header corresponding to the resource request MAC CE, and whether the current direct communication interface has the suspended CSI MAC CE or not is indicated by utilizing one R bit in the MAC sub-header. If the direct communication interface only has CSI MAC CE, the content of the Sidelink BSR MAC CE is set to be null.

The subheader format corresponding to the resource request MAC CE is shown in fig. 14, and whether the MAC CE part has a length depends on whether a Sidelink BSR currently exists.

The priority determining mode of the resource request MAC CE when performing uplink LCP (Logical Channel priority) processing on the Uu interface may be as follows:

mode 1: after the Configured Grant configuration MAC CE (Configured Grant configuration MAC CE including Uu interface and/or direct communication interface), and before the BSR MAC CE (including Uu interface and/or direct communication interface BSR MAC CE). Wherein the BSR MAC CE may be a BSR MAC CE of a Uu link and/or a sildelink BSR MAC CE of a direct communication interface.

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

-C-RNTI MAC CE or data from UL-CCCH；

-Configured Grant Confirmation MAC CE；

-a 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.1.6and 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.

mode 2: after the C-RNTI MAC CE or UL-CCCH data, before a Configured Grant configuration MAC CE (Configured Grant configuration MAC CE comprising a Uu interface and/or a direct communication interface), wherein the Configured Grant configuration MAC CE can be a Configured Grant configuration MAC CE corresponding to a Uu link pre-configuration authorization and/or a Configured Grant configuration MAC CE corresponding to a direct communication interface pre-configuration authorization.

-C-RNTI MAC CE or data from UL-CCCH；

-a 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；

-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.

and step 404, the network side equipment 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) according to the priority processing procedure of the direct communication interface, where the MAC PDU may carry the resource request MAC CE.

As shown in fig. 15, the resource request method according to the embodiment of the present invention includes:

step 1501, the terminal performs triggering judgment of the CSI MAC CE.

When the terminal receives the SCI, if the SCI carries the CSI indication, the CSI MAC CE is triggered. And the CSI MAC CE is in a suspended state after being triggered.

Step 1502, the terminal obtains the resource of the transmission resource request MAC CE.

and (I) if the Uu interface has uplink resources and no Sidelink BSR needs to be transmitted at the transmission time corresponding to the uplink resources of the Uu interface, the terminal determines the uplink resources of the Uu interface as the resources for transmitting the CSI MAC CE resource request MAC CE.

(1) And if so, requesting transmission resources of the CSI MAC CE through the dedicated SR resources. The network side equipment receives the SR and allocates direct communication resources for a terminal direct communication interface, and the terminal can transmit the CSI MAC CE by using the direct communication resources;

(2) If not, the terminal needs to initiate a RA SR. And the network side equipment allocates uplink resources of the Uu interface for the terminal through a random access process. And if no Sidelink BSR needs to be transmitted 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 transmitting the CSI MAC CE resource request MAC CE.

And step 1503, the terminal sends the 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 to the terminal.

And after receiving the resources from the network side, the terminal organizes the MAC PDU according to the priority processing process of the direct communication interface, wherein the CSI MAC CE can be carried in the MAC PDU.

The description of step 1503 and step 1504 may refer to the description of steps 403 and 404.

The embodiment of the invention also provides a resource request device which is applied to the terminal. Referring to fig. 16, fig. 16 is a structural diagram of a resource request device according to an embodiment of the present invention. Because the principle of the resource request device for solving the problem is similar to the resource request method in the embodiment of the present invention, the implementation of the resource request device can refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 16, the resource requesting apparatus 1600 includes: a first sending module 1601, configured to send first indication information to a network side device, where the first indication information is used to indicate that a terminal has CSI MAC CE to be transmitted on a direct communication interface; a first obtaining module 1602, configured to obtain a direct communication interface resource allocated by the network side device, and transmit the CSI MAC CE by using the direct communication interface resource.

Wherein the first indication information is transmitted by using a mode of MAC CE. Specific contents and format of the MAC CE, etc., can be referred to the description of the foregoing embodiments.

Optionally, the first sending module 1601 may include: the first determining submodule is used for determining a target resource for sending the first indication information; and the first sending submodule is used for sending the first indication information to the network side equipment by using the target resource.

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

and if the Uu interface has no uplink resource and the CSI MAC CE has no direct communication interface scheduling request Sidelink SR resource special for the CSI MAC CE on the Uu interface, initiating a random access process to the network side equipment, acquiring the uplink resource of the Uu interface allocated by the network side equipment through the random access process, and taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource.

Optionally, when there is uplink resource on the Uu interface, if there is no Sidelink BSR to be transmitted at the transmission time corresponding to the uplink resource, taking the uplink resource on the Uu interface as the target resource;

Optionally, the uplink resource of the Uu interface meets the following conditions:

Optionally, when the Uu interface performs priority processing on an 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 configuration 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 configuration MAC CE.

The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

The embodiment of the invention also provides a resource request device which is applied to the network side equipment. Referring to fig. 17, fig. 17 is a structural diagram of a resource request device according to an embodiment of the present invention. Because the principle of the resource request device for solving the problem is similar to the resource request method in the embodiment of the present invention, the implementation of the resource request device can refer to the implementation of the method, and repeated details are not 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, where the first indication information is used to indicate that the terminal has a CSI MAC CE on a direct communication interface to transmit; a first allocating module 1702, configured to allocate a direct communication interface resource to the terminal according to the first indication information.

Optionally, the first allocating module allocates a direct communication interface resource to the terminal according to at least one of the following information:

The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and technical effects are similar, which are not described herein again.

The embodiment of the invention also provides a resource request device which is applied to the network side device. As shown in fig. 18, the resource request device according to the embodiment of the present invention includes: the processor 1800 reads the program stored in the memory 1820 and executes the following processes:

A transceiver 1810 for receiving and transmitting data under the control of the processor 1800.

In fig. 18, among other things, the bus architecture may include any number of interconnected buses and bridges with various circuits including one or more processors, represented by the processor 1800, and memory, represented by the memory 1820. 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 1810 may be a plurality of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 may store data used by the processor 1800 in performing operations.

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

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

size of a direct communication interface CSI MAC CE;

scheduling delay requirements of the direct communication interface CSI MAC CE.

The device provided by the embodiment of the present invention may implement the above method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

The embodiment of the invention also provides a resource request device which is applied to the terminal. As shown in fig. 19, the resource request device according to the embodiment of the present invention includes: the processor 1900, which reads the program in the memory 1920, executes the following processes:

sending first indication information to network side equipment, wherein the first indication information is used for indicating that a channel state indication media access control unit (CSI MAC CE) of a terminal is required to be transmitted on a direct communication interface;

A transceiver 1910 for receiving and transmitting data under the control of processor 1900.

In fig. 19, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1900 and various circuits of memory represented by memory 1920 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 1910 may be multiple elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. User interface 1930 may also be an interface to connect externally to a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

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

Wherein, the MAC CE is identified by adopting any one of the following modes:

the MAC subheader corresponding to the MAC CE carries a target Logical Channel Identifier (LCID);

The MAC sub-header carries third indication information, where the third indication information is used to indicate a number type of CSI MAC CEs currently suspended by the direct communication interface, or the MAC sub-header carries fourth indication information, where the fourth indication information is used to indicate a specific number of CSI MAC CEs 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;

a direct communication destination address and/or a scheduling delay requirement corresponding to a CSI MAC CE which has the highest priority or has the most urgent scheduling requirement in the CSI MAC CEs currently suspended by a terminal direct communication interface;

Wherein the scheduling delay requirement is determined as follows:

determining a difference value T2 between the time delay limit of each CSI MAC CE and the T1;

Wherein the trigger condition of the first indication information is:

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;

in case the direct communication interface currently has a CSI MAC CE pending:

if the Uu interface has no uplink resource and the CSI MAC CE has no direct communication interface Sidelink SR resource dedicated to the CSI MAC CE on the Uu interface, initiating a random access process to the network side equipment, acquiring the uplink resource of the Uu interface allocated by the network side equipment through the random access process, and taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource.

Under the condition that a Uu interface has uplink resources, if no Sidelink BSR needs to be transmitted at the transmission time corresponding to the uplink resources, taking the uplink resources of the Uu interface as the target resources;

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

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

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the resource request method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. With such an understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods according to the embodiments of the present invention.

While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A resource request method is applied to a terminal, and is characterized by comprising the following steps:

sending first indication information to network side equipment, wherein the first indication information is used for indicating that a channel state indication media access control unit (CSIMAC CE) of a terminal is required to be transmitted at a direct communication interface;

acquiring direct communication interface resources allocated by the network side equipment, and transmitting the CSIMAC CE by using the direct communication interface resources;

wherein the first indication information is sent by using a target resource, and the target resource is determined as follows:

in case the direct communication interface currently has a suspended CSIMAC CE:

if the Uu interface has no uplink resource and the CSIMAC CE has no dedicated direct communication interface scheduling request Sidelink SR resource on the Uu interface, initiating a random access process to the network side equipment, acquiring the uplink resource of the Uu interface allocated by the network side equipment through the random access process, and taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource.

2. The method of claim 1, wherein the first indication information is transmitted by using a Medium Access Control (MAC) CE.

3. The method of claim 2, wherein the MAC CE is identified by any one of the following methods:

the MAC subheader corresponding to the MAC CE carries an LCID corresponding to a direct communication interface buffer status report, sidelink BSR MAC CE, and carries second indication information in the MAC subheader, where the second indication information is used to indicate whether content transmitted by the MAC CE is the Sidelink BSR MAC CE or the first indication information.

4. The method of claim 3,

carrying third indication information in the MAC subheader, where the third indication information is used to indicate a number type of the CSIMAC CEs currently suspended by the direct communication interface, or carrying fourth indication information in the MAC subheader, where the fourth indication information is used to indicate a specific number of the CSIMAC CEs currently suspended by the direct communication interface, where the number type includes one or more than one.

5. The method according to claim 2, wherein the content of the MAC CE is any one of:

is empty;

a direct communication destination address and/or a scheduling delay requirement corresponding to a CSIMAC CE with the highest priority or the most urgent scheduling requirement in the CSIMAC CEs currently suspended by a terminal direct communication interface;

the number of all CSIMAC CEs currently suspended for a terminal direct communication interface;

and the direct communication destination address and/or the scheduling delay requirement corresponding to each CSIMAC CE currently suspended by the terminal direct communication interface.

6. The method according to claim 5, wherein the length of the MAC CE is variable, and a length indication field is carried in a MAC subheader corresponding to the MAC CE, and the length indication field is used for indicating the length of the MAC CE.

7. The method of claim 5, wherein the scheduling delay requirement is determined as follows:

determining a time difference T1 between the starting time of the uplink resource corresponding to the first indication information and the triggering time of each CSIMAC CE;

determining a difference T2 between the delay limit of each CSIMAC CE and said T1;

8. The method of claim 1, wherein the triggering condition of the first indication information is:

the direct communication interface has suspended CSIMAC CE and the Uu interface has no available uplink resource; or,

the direct communication interface has suspended CSIMAC CE, the Uu interface has available uplink resources, but does not meet the time delay limit of CSIMAC CE transmission; or,

the direct communication interface has suspended CSIMAC CE, the Uu interface has no available uplink resource and has no Sidelink BSR trigger; or,

the direct communication interface has suspended CSIMAC CE, the Uu interface has available uplink resources but does not meet the time delay limit of CSIMAC CE transmission, and no Sidelink BSR trigger exists.

9. The method of claim 1, wherein the cancellation condition of the first indication information is that a direct communication interface is triggered by a Sidelink BSR; alternatively, the first indication information is transmitted.

10. The method according to claim 1, wherein the sending first indication information to the network-side device includes:

determining a target resource for sending the first indication information;

11. The method of claim 10, wherein the determining a target resource for transmitting the first indication information further comprises:

in case the direct communication interface currently has a suspended CSIMAC CE:

and if the Uu interface has uplink resources, taking the uplink resources of the Uu interface as the target resources.

12. The method of claim 11,

and if the network side equipment does not need to transmit the Sidelink BSR at the transmission time corresponding to the uplink resource of the Uu interface allocated by the network side equipment through the random access process under the condition that the Uu interface does not have the uplink resource and the CSIMAC CE does not have the Sidelink SR resource special for the CSIMAC CE at the Uu interface, taking the uplink resource of the Uu interface allocated by the network side equipment as the target resource.

13. The method of claim 12, wherein the uplink resource of the Uu interface satisfies the following condition:

and the difference between the time of the uplink resource of the Uu interface and the trigger time of the suspended CSIMAC CE is smaller than T3, wherein T3 is smaller than the delay limit of the suspended CSIMAC CE.

14. The method according to claim 1, wherein when the Uu interface performs priority processing on the uplink logical channel, the priority determination manner of the first indication information includes any one of:

the first indication information is located after the pre-Configured authorized Grant Confirmation (configurable Grant configuration MAC CE) and before the BSR MAC CE;

the first indication information is located behind a cell radio network temporary identity C-RNTI MAC CE or uplink common control channel UL CCCH data and in front of a Configured Grant configuration MAC CE.

15. A resource request method is applied to network side equipment, and is characterized by comprising the following steps:

receiving first indication information sent by a terminal, wherein the first indication information is used for indicating that the terminal has CSIMAC CE transmission requirement on a direct communication interface;

according to the first indication information, allocating direct communication interface resources for the terminal;

wherein the first indication information is sent by using a target resource, and the target resource is determined by the terminal as follows:

in case the direct communication interface currently has a suspended CSIMAC CE:

16. The method of claim 15, wherein the first indication information is transmitted by using a MAC CE.

17. The method according to claim 15, wherein said allocating direct communication interface resources to the terminal according to the first indication information comprises:

the number of CSIMAC CEs currently suspended by the direct communication interface;

a direct communication interface destination address corresponding to the CSIMAC CE which is currently suspended by the direct communication interface;

size of the direct communication interface CSIMAC CE;

scheduling delay requirements of the direct communication interface CSIMAC CE.

18. A resource request device applied to a terminal is characterized by comprising:

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

a first obtaining module, configured to obtain a direct communication interface resource allocated by the network side device, and transmit the CSIMAC CE using the direct communication interface resource;

in case the direct communication interface currently has a suspended CSIMAC CE:

19. A resource request device applied to a network side device is characterized by comprising:

a first receiving module, configured to receive first indication information sent by a terminal, where the first indication information is used to indicate that a CSIMAC CE needs to be transmitted on a direct communication interface of the terminal;

a first allocation module, configured to allocate a direct communication interface resource to the terminal according to the first indication information;

wherein the first indication information is transmitted by using a target resource, and the target resource is determined by the terminal as follows:

in case the direct communication interface currently has a suspended CSIMAC CE:

20. A resource request device applied to a terminal comprises: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

sending first indication information to network side equipment, wherein the first indication information is used for indicating that a CSIMAC CE needs to be transmitted in a direct communication interface of a terminal;

in case the direct communication interface currently has a suspended CSIMAC CE:

21. The apparatus of claim 20, wherein the first indication information is transmitted using a MAC CE.

22. The apparatus of claim 21, wherein the MAC CE is identified by any one of:

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

the MAC subheader corresponding to the MAC CE carries an LCID corresponding to a Sidelink BSR MAC CE, and carries second indication information in the MAC subheader, where the second indication information is used to indicate whether content transmitted by the MAC CE is the Sidelink BSR MAC CE or the first indication information.

23. The apparatus according to claim 22, wherein a third indication information is carried in the MAC subheader, and the third indication information is used to indicate a number type of CSIMAC CEs currently suspended by the direct communication interface, or a fourth indication information is carried in the MAC subheader, and the fourth indication information is used to indicate a specific number of CSIMAC CEs currently suspended by the direct communication interface, where the number type includes one or more than one.

24. The apparatus according to claim 21, wherein the content of the MAC CE is any one of:

is empty;

25. The apparatus of claim 24, wherein the length of the MAC CE is variable, and a length indication field is carried in a MAC sub header corresponding to the MAC CE, and the length indication field is used for indicating the length of the MAC CE.

26. The apparatus of claim 24, wherein the scheduling latency requirement is determined as follows:

27. The apparatus of claim 20, wherein the triggering condition of the first indication information is:

28. The apparatus of claim 20, wherein the cancellation condition of the first indication information is that a direct communication interface is triggered by a Sidelink BSR; or, the first indication information is transmitted.

29. The apparatus of claim 20, wherein the processor is further configured to read a program in the memory and perform the following:

determining a target resource for sending the first indication information;

30. The apparatus of claim 29, wherein the processor is further configured to read a program in the memory and perform the following:

in case the direct communication interface currently has a suspended CSIMAC CE:

31. The apparatus of claim 30, wherein the processor is further configured to read a program in the memory and perform the following:

32. The apparatus of claim 31, wherein the uplink resource of the Uu interface satisfies the following condition:

33. The apparatus according to claim 20, wherein when the Uu interface performs priority processing on the uplink logical channel, the priority determination manner of the first indication information includes any one of:

34. A resource request device is applied to a network side device and comprises: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

receiving first indication information sent by a terminal, wherein the first indication information is used for indicating that the terminal has CSIMAC CE to be transmitted on a direct communication interface;

in case the direct communication interface currently has a suspended CSIMAC CE:

35. The apparatus of claim 34, wherein the first indication information is transmitted using a MAC CE.

36. The apparatus of claim 34, wherein the processor is further configured to read a program in the memory and perform the following:

size of the direct communication interface CSIMAC CE;

scheduling delay requirements of the direct communication interface CSIMAC CE.

37. A computer readable storage medium for storing a computer program, wherein the computer program when executed by a processor implements the steps in the resource request method according to any one of claims 1 to 14 or wherein the computer program when executed by a processor implements the steps in the resource request method according to any one of claims 15 to 17.