CN115334645A

CN115334645A - Multicast feedback processing method, terminal and network side equipment

Info

Publication number: CN115334645A
Application number: CN202110512958.9A
Authority: CN
Inventors: 曲鑫; 李娜; 沈晓冬; 潘学明
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-11-11

Abstract

The application discloses a multicast feedback processing method, a terminal and network side equipment, and belongs to the technical field of communication. The multicast feedback processing method of the embodiment of the application comprises the following steps: a terminal receives resource configuration information sent by network side equipment, wherein the resource configuration information is used for configuring feedback resources of a multicast service; and the terminal determines the feedback resource of the current multicast service according to the resource configuration information.

Description

Multicast feedback processing method, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a multicast feedback processing method, a terminal and network side equipment.

Background

Currently, a New Radio (NR) system introduces Broadcast/Multicast characteristics, and can implement Multimedia Broadcast Multicast Service (MBMS) or Broadcast Multicast Service (MBS).

However, the existing NR system only supports unicast Physical Downlink Shared Channel (PDSCH) and Hybrid Automatic Repeat reQuest (HARQ) ACK/NACK feedback thereof. Thus, how to perform HARQ feedback for multicast PDSCH transmission becomes an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a multicast feedback processing method, a terminal and network side equipment, which can realize HARQ feedback aiming at multicast PDSCH transmission.

In a first aspect, a multicast feedback processing method is provided, where the method includes:

a terminal receives resource configuration information sent by network side equipment, wherein the resource configuration information is used for configuring feedback resources of a multicast service;

and the terminal determines the feedback resource of the current multicast service according to the resource configuration information.

In a second aspect, a multicast feedback processing apparatus is provided, including:

a receiving module, configured to receive resource configuration information sent by a network side device, where the resource configuration information is used to configure a feedback resource of a multicast service;

and the processing module is used for determining the feedback resources of the current multicast service according to the resource configuration information.

In a third aspect, a multicast feedback processing method is provided, where the method includes:

and the network side equipment sends resource configuration information, wherein the resource configuration information is used for configuring feedback resources of the multicast service.

In a fourth aspect, a multicast feedback processing apparatus is provided, including:

and the sending module is used for sending resource configuration information, and the resource configuration information is used for configuring feedback resources of the multicast service.

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first aspect.

A sixth aspect provides a terminal, including a processor and a communication interface, where the communication interface is configured to receive resource configuration information sent by a network side device, and the resource configuration information is used to configure a feedback resource of a multicast service; and the processor is used for determining the feedback resource of the current multicast service according to the resource configuration information.

In a seventh aspect, a network side device is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the steps of the method according to the third aspect.

In an eighth aspect, a network side device is provided, which includes a processor and a communication interface, where the communication interface is configured to send resource configuration information, and the resource configuration information is used to configure a feedback resource of a multicast service.

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first aspect or the steps of the method of the third aspect.

In a tenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions, to implement a method according to the first aspect, or to implement a method according to the third aspect.

In an eleventh aspect, there is provided a computer program/program product stored in a non-volatile storage medium, the program/program product being executable by at least one processor to implement a method as described in the first aspect, or to implement steps of a method as described in the third aspect

In the embodiment of the application, after receiving the resource configuration information, which is sent by the network side device and used for configuring the feedback resource of the multicast service, the terminal determines the feedback resource of the current multicast service according to the resource configuration information, so that the feedback resource is used for performing HARQ feedback in the following process.

Drawings

FIG. 1 is a block diagram of a wireless communication system;

fig. 2 is a flowchart of a multicast feedback processing method according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a configuration of feedback resources according to an embodiment of the present application;

FIG. 4 is a second schematic diagram illustrating the configuration of feedback resources according to the second embodiment of the present application;

fig. 5 is a schematic diagram of multicast transmission and feedback in the embodiment of the present application;

fig. 6 is a second schematic diagram of multicast transmission and feedback in the embodiment of the present application;

fig. 7 is a second flowchart of a multicast feedback processing method according to the embodiment of the present application;

FIG. 8 is a diagram illustrating the structure of the apparatus corresponding to FIG. 2;

FIG. 9 is a view showing the structure of the apparatus corresponding to FIG. 7;

fig. 10 is a block diagram of a communication device of an embodiment of the present application;

fig. 11 is a structural diagram of a terminal according to an embodiment of the present application;

fig. 12 is a structural diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein generally refer to a class and do not limit the number of objects, for example, a first object can be one or more. In addition, "and/or" in the specification and claims means at least one of connected objects, and a character "/" generally means that the former and latter related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-a) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an enodeb, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home enodeb, a WLAN access Point, a WiFi node, a Transmit Receive Point (TRP), or some other suitable term in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.

It should be noted that, in the broadcast multicast transmission in LTE, MBSFN-scheme MBMS service transmission and sc-ptm-scheme multicast service transmission are supported. In the MBSFN scheme, the MBMS transmission is performed through a PMCH (Physical Multicast Channel) Physical Channel in an MBSFN (Multimedia Broadcast Multicast service Single Frequency Network) subframe. The Control information is transmitted through system information (e.g., SIB 13) and MCCH (Multicast Control Channel, broadcast Control Channel), and the data is transmitted through MTCH (Multicast Traffic Channel). The control information (control channel parameters, service channel parameters, scheduling information and the like) and the data information of the MBMS are sent in a broadcast mode, so that idle-state UE and connected-state UE can receive the MBMS, and the data information of the MBMS is only sent in MBSFN subframes. sc-ptm is a multicast transmission method standardized after MBMS service, and is scheduled and transmitted only in a single cell, which is the biggest difference from the MBSFN method, and service scheduling is performed by g-RNTI (group RNTI). And transmitting the PDSCH channel scheduled by the PDCCH. The Control information is transmitted through system information (e.g., SIB 20) and an SC-MCCH (Single Cell Multicast Control Channel, single Cell broadcast Control Channel), and the data is transmitted through an SC-MTCH (Single Cell Multicast Traffic Channel). The SC-MCCH is transmitted through a PDSCH (Single Cell RNTI) scheduled by a PDCCH (Radio Network Temporary Identity) of a Single Cell RNTI (Radio Network Temporary Identity), and the SC-MTCH is transmitted through a PDSCH (Group RNTI) scheduled by a PDCCH of a G-RNTI (Group RNTI). Namely, the control channel parameters, the service identification, the period information and the like are broadcasted in the broadcast message, the scheduling information is notified by the PDCCH scrambled by the g-RNTI, the data part is sent in a multicast mode, and the method is equivalent to that interested UE monitors the g-RNTI to obtain data scheduling and then receives the data scheduling.

In the LTE, one UE can receive a plurality of broadcast multicast services, in an MBSFN mode, different services have different MBSFN configurations, the UE can distinguish different services through the MBSFN, in the SC-PTM, different services use different g-RNTIs, and the UE can distinguish different services through the g-RNTI.

The UE needs HARQ feedback for downlink transmitted PDSCH (PDCCH dynamically scheduled PDSCH or semi-persistently scheduled SPS PDSCH) or some PDCCH (e.g. PDCCH releasing SPS PDSCH or PDCCH indicating SCell sleepless and no scheduled PDSCH). HARQ feedback is transmitted on PUCCH. The UE receives the PDSCH in a time slot L, and then feeds back HARQ information in a time slot L + k1, wherein k1 is indicated by a PDCCH for dispatching the PDSCH, and the value range of k1 is configured by RRC. According to the HARQ feedback content, two feedback modes are adopted:

in a first mode, HARQ feedback information is ACK/NACK: on the base station side, the base station receives corresponding HARQ feedback information at a corresponding time position according to the value of k1, and when the UE determines that the PDSCH is decoded correctly, ACK is fed back; when the UE determines the PDSCH decoding error, NACK is fed back. If the base station does not receive the corresponding ACK/NACK feedback, the base station may consider that the UE does not receive a PDCCH (DTX) scheduling the PDSCH and needs to retransmit the PDSCH. In multicast communication, when the feedback mode is adopted, a feedback resource is allocated to each user in each group, and the user can send corresponding feedback information on the feedback resource according to the decoding result of the received PDSCH. So that the base station can determine whether the decoding of each user in the group is successful according to the received multiple feedback information. The method can effectively improve the reliability of multicast communication.

In the second mode, the HARQ feedback information is NACK: and on the base station side, the base station receives corresponding HARQ feedback information at a corresponding time position according to the value of k1, and when the UE determines that the PDSCH is wrongly decoded, NACK is fed back, and the NACK is not fed back under the other conditions. If the base station does not receive the corresponding NACK feedback, the base station considers that the UE correctly decodes the PDSCH, and the transmission is finished. In multicast communication, when the feedback mode is adopted, one common feedback resource can be allocated to a plurality of users in a group, and a plurality of users can simultaneously send NACK on the common feedback resource. After receiving the NACK feedback, the base station may determine that there is a failure in decoding the PDSCH of the user among the multiple users, and needs to retransmit the PDSCH. The method can effectively save feedback resources.

The transmission processing method provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings by using some embodiments and application scenarios thereof.

As shown in fig. 2, a multicast feedback processing method according to an embodiment of the present application includes:

step 201, a terminal receives resource configuration information sent by a network side device, where the resource configuration information is used to configure a feedback resource of a multicast service.

Here, the network side device configures dedicated feedback resources of the multicast service for the terminal, and sends the resource configuration information to the terminal. After the terminal executes the step and receives the resource configuration information, the terminal can subsequently determine the applicable feedback resource.

Step 202, the terminal determines the feedback resource of the current multicast service according to the resource configuration information.

In this step, after receiving the resource configuration information in step 201, the terminal further determines a feedback resource corresponding to the current multicast service.

In this way, according to the method of the embodiment of the present application, after receiving the resource configuration information, which is sent by the network side device and used for configuring the feedback resource of the multicast service, the terminal determines the feedback resource of the current multicast service according to the resource configuration information, so that the feedback resource is used for HARQ feedback in the following process.

Wherein the resource configuration information is transmitted through RRC signaling.

It should be appreciated that the method of the embodiment of the present application is applicable to NR multicast services, and in particular, multicast PDSCH supports feedback of only HARQ NACK, i.e. NACK-only feedback. Accordingly, the determined feedback resource is a NACK-only feedback resource.

Optionally, in this embodiment, the resource configuration information corresponds to one or more feedback resources, and the one or more feedback resources are associated with a multicast service type supported by the terminal; or,

the resource configuration information corresponds to a feedback resource set, and the feedback resource set is preset.

That is to say, on one hand, the way for the network side device to configure the feedback resources of the multicast service is to configure one or more feedback resources according to each multicast service type supported by the terminal, and accordingly, resource configuration information corresponding to the one or more feedback resources can be obtained and sent to the terminal.

Thus, taking the multicast service corresponding to the terminal 1, the terminal 2 and the terminal 3 as an example, it is assumed that the terminal 1 is interested in two multicast services, which are identified as multicast service 1 and multicast service 2, the terminal 2 is interested in two multicast services, which are identified as multicast service 3 and multicast service 4, and the terminal 3 is interested in all the four multicast services. Optionally, the base station configures NACK-only feedback resources for the terminal 1-3, and configures two feedback resources for each service, as shown in table 1.

TABLE 1

Or, the base station configures NACK-only feedback resources for the terminal 1-3, and each service configures only one feedback resource, as shown in table 2.

TABLE 2

	Multicast service 1	Multicast service 2	Multicast service 3	Multicast service 4
					Terminal 1	Feedback resource 1	Feedback resource 2
Terminal 2			Feedback resource 3	Feedback resource 4
					Terminal 3	Feedback resource 1	Feedback resource 2	Feedback resource 3	Feedback resource 4

In this embodiment, one or more feedback resources are configured according to each multicast service type supported by the terminal, which may also be implemented by using a G-RNTI, that is, one or more feedback resources are configured for each G-RNTI supported by the terminal.

Of course, the feedback resources configured for the multicast service types supported by the terminal may be the same or different.

On the other hand, the way of configuring the feedback resource of the multicast service by the network side device is through a preset feedback resource set configuration.

Thus, taking the multicast service corresponding to the terminal 1, the terminal 2 and the terminal 3 as an example, it is assumed that the terminal 1 is interested in 8 multicast services, and is identified as multicast services 1-8, the terminal 2 is interested in 8 multicast services, and is identified as multicast services 9-16, and the terminal 3 is interested in 16 multicast services. The base station configures NACK-only feedback resources for users 1-3 as shown in table 3.

TABLE 3

	Feedback resources
		Terminal 1	The feedback resources are 1-16 of the feedback channel,
terminal 2	Feedback resources 1-16
		Terminal 3	Feedback resources 1-16

Optionally, in this embodiment, the resource configuration information is further used to configure an auxiliary feedback resource of the multicast service;

the auxiliary feedback resource is used for sending feedback information under the condition that a plurality of pieces of feedback information need to be fed back.

Thus, the multicast terminal determines that the HARQ feedback mode is a feedback mode of only feeding back NACK, and determines that at least two NACKs need to be fed back in one uplink time slot, and then sends NACK on one auxiliary feedback resource of the uplink time slot. Wherein, the plurality of feedback resources corresponding to the at least two NACKs may or may not overlap in time.

Optionally, in this embodiment, the resource configuration information includes frequency domain information of the resource, and the frequency domain information includes start position information of the resource.

That is, when the resource configuration information is used to configure the feedback resource of the multicast service, the resource configuration information includes frequency domain information of the feedback resource, and the frequency domain information includes starting position information of the feedback resource. When the resource configuration information is used for configuring the auxiliary feedback resource of the multicast service, the resource configuration information includes frequency domain information of the auxiliary feedback resource, and the frequency domain information includes initial position information of the auxiliary feedback resource.

Optionally, in a case that the feedback resource supports frequency hopping within a time slot, the frequency domain information further includes start position information of a second hop.

That is, the feedback resource supports frequency hopping within a time slot, and the frequency domain information of the feedback resource further includes start position information of a second hop. Similarly, the auxiliary feedback resource supports frequency hopping in a time slot, and the frequency domain information of the auxiliary feedback resource further includes start position information of a second hop.

Optionally, the starting position information is a first identifier, and the first identifier is used to indicate an offset of a first resource block and a second resource block;

the first resource block is a resource block where a starting position is located, and the second resource block is a resource block where a lower boundary of a common frequency domain resource where the starting position is located.

Here, the start position refers to a start position of a feedback resource or an auxiliary feedback resource configured by the network side device. The Common Frequency Resource (CFR) is a CFR for multicast communication.

In this way, the initial position information adopts a first identifier indicating the offset of a first Resource Block (RB) and a second Resource Block, and since the first Resource Block is the Resource Block where the initial position is located, and the second Resource Block is the Resource Block where the lower boundary of the common frequency domain Resource where the initial position is located, and when the network side device configures the same feedback Resource and/or auxiliary feedback Resource for a plurality of terminals, the lower boundary of the frequency domain of the CFR where the initial position is located is used as the configured frequency domain reference point, it is not necessary to separately calculate the corresponding frequency domain position identifier for each terminal.

For example, if the resource configuration information is used to configure a feedback resource of the multicast service, when a resource block where an initial position of the feedback resource is located is the same as a resource block of a lower boundary of a CFR where the feedback resource is located, the first identifier is 0; when the deviation between the resource block where the initial position of the feedback resource is located and the resource block of the lower boundary of the CFR where the initial position of the feedback resource is located is L, the first identifier is L, and L is an integer greater than or equal to 0. Similarly, the method for determining the first identifier in the resource configuration information of the auxiliary feedback resource is also the same, and is not described herein again.

Optionally, the resource configuration information includes time domain information of the resource, where the time domain information includes a starting symbol position and a time domain length of the resource in the time slot.

That is, when the resource configuration information is used to configure the feedback resource of the multicast service, the resource configuration information includes time domain information of the feedback resource, and the time domain information includes a starting symbol position and a time domain length of the feedback resource in a time slot. When the resource configuration information is used for configuring the auxiliary feedback resource of the multicast service, the resource configuration information includes time domain information of the auxiliary feedback resource, and the time domain information includes a starting symbol position and a time domain length of the auxiliary feedback resource in a time slot.

In addition, optionally, the resource configuration information may further include code domain information of the resource.

Thus, the resource configuration information is used to configure the feedback resource of the multicast service, and the resource configuration information at least includes one of frequency domain information, time domain information, and code domain information of the feedback resource. The resource configuration information is used for configuring an auxiliary feedback resource of the multicast service, and the resource configuration information at least includes one of frequency domain information, time domain information and code domain information of the auxiliary feedback resource.

It should be noted that, in this embodiment, when the multicast terminal determines that the HARQ feedback mode is a feedback mode that only NACK is fed back, the multicast terminal determines, through the multicast service type (or G-RNTI) received by itself, the configured corresponding multicast feedback resource, and sends the feedback. When one multicast service type is only configured with one feedback resource, the terminal determines whether to send NACK on the feedback resource according to the PDSCH decoding result; when a multicast service type configures multiple feedback resources, a network side device may indicate one of the multiple feedback resources through downlink control information DCI. Therefore, optionally, step 202 comprises:

when the feedback resource corresponding to the resource configuration information is associated with the multicast service type supported by the terminal and the feedback resource associated with the multicast service type to which the current multicast service belongs comprises a plurality of feedback resources, the terminal receives downlink control information;

and the terminal determines the feedback resource indicated by the first feedback resource identifier in the plurality of feedback resources according to the first feedback resource identifier carried by the downlink control information.

That is, for each multicast service type supported by the terminal, the network side device configures a feedback resource, where the feedback resource configured for the multicast service type to which the current multicast service belongs includes multiple feedback resources, and the terminal further determines, from the multiple feedback resources, the feedback resource indicated by the first feedback resource identifier to send feedback information, through the first feedback resource identifier carried in the DCI.

Optionally, the first feedback resource identifier is:

k1 bits of indication information, wherein K1 is an integer greater than 0; or

A Control Channel Element (CCE) identifier; or alternatively

And joint indication of indication information of K2 bits and CCE identification, wherein K2 is an integer larger than 0.

If the first feedback resource identifier is K1 bits of indication information, K1 is determined based on the number of multiple feedback resources (feedback resources configured for a multicast service type), for example, the number of feedback resources corresponding to a multicast service type (or G-RNTI) is M,

if the first feedback resource identifier is a CCE identifier, the CCE identifier corresponds to a plurality of feedback resources (feedback resources configured for a multicast service type) one to one, that is, one CCE identifier uniquely indicates one of the plurality of feedback resources, and if the number of feedback resources corresponding to one multicast service type (or G-RNTI) is M, the terminal determines one of the M feedback resources according to the CCE identifier carried by the DCI.

If the first feedback resource identifier is the joint indication of the indication information of K2 bits and the CCE identifier, the number of the feedback resources corresponding to one multicast service type (or G-RNTI) is M, and the number of the CCE identifiers is M1, then M feedback resources can be identified and identified by M1 CCEs through M1 CCEs

The indication information of the individual bits is jointly indicated.

Also, for a preset feedback resource set, the feedback resource set may include a plurality of feedback resources, and therefore, step 202 includes:

under the condition of one feedback resource set corresponding to the resource configuration information, the terminal receives downlink control information;

and the terminal determines the feedback resource indicated by the second feedback resource identifier in the feedback resource set according to the second feedback resource identifier carried by the downlink control information.

That is, for a feedback resource set configured by the network side device for the terminal, the terminal may further determine, in the feedback resource set, the feedback resource indicated by the second feedback resource identifier to send the feedback information, through the second feedback resource identifier carried by the DCI.

Optionally, the second feedback resource identifier is:

k3 bits of indication information, wherein K3 is an integer greater than 0; or

A CCE identification; or

And the indication information of K4 bits and the joint indication of the CCE identification, wherein K4 is an integer larger than 0.

Similar to the first feedback resource identifier, if the second feedback resource identifier is K3 bits of indication information, K3 is determined based on the number of feedback resources in the feedback resource set, for example, the number of feedback resources in the feedback resource set is M',

if the second feedback resource identifier is a CCE identifier, the CCE identifier corresponds to the feedback resources in the feedback resource set one by one, that is, one CCE identifier uniquely indicates one of the feedback resources in the feedback resource set, and if the number of the feedback resources in the feedback resource set is M ', the terminal determines one of M' feedback resources according to the CCE identifier carried by the DCI.

If the second feedback resource identifier is a joint indication of indication information of K4 bits and a CCE identifier, the number of feedback resources in the feedback resource set is M ', and the number of CCE identifiers is M2, then M' feedback resources may be identified by M2 CCEs and

the indication information of the individual bits is jointly indicated.

Of course, if only one feedback resource is configured for each multicast service type, the network side device does not need to indicate a feedback resource identifier in the DCI, and the user determines the feedback resource directly according to the resource configuration information according to the current multicast service.

In addition, in this embodiment, one feedback resource or the auxiliary feedback resource is repeated at each uplink slot.

The application of the method of the embodiment of the present invention is described below with reference to specific scenarios:

in a scenario one, a base station configures NACK-only feedback resources for terminals 1 to 3, and each service configures two feedback resources, as shown in table 1.

A configuration manner of one feedback resource, for example, feedback resource 1-1 of terminal 1 is shown in fig. 3. In fig. 3, the starting symbol position is 12, the symbol length is 2, and the starting position information of the frequency domain is indicated by a first identifier (a first identifier of a resource block), which is determined by using a resource block where a lower boundary of the frequency domain of the CFR of the multicast communication is located as a reference point. In fig. 3, the lower boundary of the CFR in the frequency domain is PRB4, and the starting position of the feedback resource in the frequency domain is PRB5, so that when the offset between the resource block where the starting position of the feedback resource in the frequency domain and the resource block where the lower boundary of the CFR is 1, the first identifier is 1.

The configuration of one feedback resource, for example, the feedback resource 3-1 of the terminal 2, is shown in fig. 4. In fig. 4, the starting symbol position is 8, the symbol length is 6, and the starting position of the frequency domain is indicated by a first identifier, where the first identifier is determined by using a resource block where a lower boundary of the frequency domain of a CFR of multicast communication is located as a reference point. In fig. 4, the lower boundary of the CFR in the frequency domain is PRB4, and the starting position of the feedback resource in the frequency domain is PRB5, so that the offset between the resource block where the starting position of the feedback resource in the frequency domain and the resource block where the lower boundary of the CFR is 1, and the first identifier is 1. In fig. 4, the feedback resource supports frequency hopping within a time slot, the start position information of the second frequency hopping is also indicated by the first identifier, the lower boundary of the frequency domain of the CFR is PRB4, the start position of the frequency domain of the second frequency hopping is PRB9, therefore, the offset from the resource block where the lower boundary of the CFR is located is 5, and the frequency domain start position information of the second frequency hopping of the feedback resource, that is, the first identifier is 5.

The time domain length of the feedback resource is one of 2 or 4 to 14, the frequency domain size is 1 resource block, and other resources shown in table 1 can be configured by a method similar to that of fig. 3 or fig. 4. Table 1 shows that feedback resources are configured for each terminal according to each interested multicast service type, and feedback resources may also be configured for each user according to a multicast service identifier, that is, G-RNTI.

Thus, as shown in fig. 5, the base station transmits the multicast service 1 in the time slot L, and the feedback resource in the DCI may be indicated by the first feedback resource identifier corresponding to the multicast identifier G-RNTI 1. The first feedback resource identifier may be K1 bits of indication information, i.e.

A single bit of indication information. Here, M =2, 1 bit is needed, and a value of 0 is taken, so that the receiving terminal is informed to select the first resource from the two resources corresponding to the multicast service 1, that is, the feedback resource 1-1 feeds back. The first feedback resource identifier may be a CCE identifier (that is, the feedback resource is indicated by a CCE identifier), the terminal determines one of 2 feedback resources according to the received CCE identifier of the PDCCH that schedules the multicast service, and one CCE identifier uniquely indicates one of the 2 feedback resources. Here, the CCE identity of PDCCH indicates feedback resources 1-1, k1 indicates 4, i.e., in slot L + 4. Therefore, the terminal 1 and the terminal 3 receive the multicast service 1 sent by the base station in the time slot L, if both PDSCHs are decoded incorrectly, both the terminal 1 and the terminal 3 feed back NACK in the feedback resource 1-1 of the time slot L +4, and the base station detects whether any terminal sends NACK in the feedback resource 1-1 of the time slot L +4, and if so, retransmits the NACK.

Similarly, the base station sends a multicast service 3 in a time slot L +1, and corresponding to the multicast identifier G-RNTI3, the feedback resource may be indicated by the first feedback resource identifier in the DCI. The first feedback resource identifier may be K1 bits of indication information, i.e.

Here, M =2, 1 bit is needed, and a value of 0 is taken to inform the receiving terminal to select the first one of the two resources corresponding to the multicast service 1, that is, the feedback resource 3-1 is used for feedback. The first feedback resource identifier may be a CCE identifier, and the terminal determines one of 2 feedback resources according to a received CCE identifier of a PDCCH that schedules a multicast service, where one CCE identifier uniquely indicates one of the 2 feedback resources, where the CCE identifier of the PDCCH indicates that the feedback resource is 3-1, and k1 indicates 4, that is, the feedback is performed in a time slot L + 5. Therefore, the terminal 2 and the terminal 3 receive the multicast service 3 sent by the base station in the time slot L +1, if the PDSCH decoding is wrong, the NACK is fed back on the feedback resource 3-1 of the time slot L +5, the base station detects whether the terminal sends the NACK on the feedback resource 3-1 of the time slot L +5, and if the NACK is sent, the transmission is carried out again.

In scenario two, the base station configures NACK-only feedback resources for the terminals 1 to 3, as shown in table 3. Where feedback resources 1-16 are pre-set.

The configuration method of the feedback resources 1-16 can refer to fig. 3 or fig. 4. And when the base station sends the multicast service, the base station indicates the feedback resource through the DCI.

As shown in fig. 5, the base station transmits a multicast service 1 in a time slot L, and a NACK-only feedback resource in DCI may be identified by a second feedback resource corresponding to a multicast identifier G-RNTI 1. The second feedback resource identification may be K3 bits of indication information, i.e.

The number of bits indicates that, here, M' =16, 4 bits are needed, and a value of 0000 is taken to inform a receiving user of feedback in the feedback resource 1; the second feedback resource identifier may also be a specific (K4) bit indication information and CCE identifier joint indication: let the number of CCE identities be 2, then the 16 feedback resources may be jointly indicated by the identities of 2 CCEs and the indication information of 3 bits (i.e., K4= 3), and if the identity of the CCE is the minimum identity and the indication information of 3 bits is 000, the receiving terminal is indicated to feed back in feedback resource 1, and K1 is indicated to be 4, that is, feed back in slot L + 4. Therefore, terminal 1 and terminal 3 receive multicast service 1 sent by the base station in time slot L, if both PDSCHs are decoded incorrectly, both terminal 1 and terminal 3 feed back NACK in feedback resource 1 of time slot L +4, the base station detects whether there is a terminal sending NACK in feedback resource 1 of time slot L +4, and if so, the terminal retransmits.

Similarly, the base station sends the multicast service 3 in the time slot L + I, corresponding to the multicast identifier G-RNTI3, and the NACK-only feedback resource in the DCI may be identified by the second feedback resource. The second feedback resource identification may be K3 bits of indication information, i.e.

The number of bits indicates that M' =16, 4 bits are needed, and a value of 0001 is taken to inform a receiving user of feedback in the feedback resource 2; the second feedback resource identifier may also be a specific (K4) bit indication information and CCE identifier joint indication: let the number of CCE identities be 2, then 16 feedback resources may be indicated by 2 CCE identities and 3 (i.e. K4= 3) bitsThe information joint indication, for example, the CCE identifier is the minimum identifier, and if the 3-bit indication information is 001, the receiving terminal is indicated to feed back in the feedback resource 2, and k1 is indicated to be 4, that is, to feed back in the slot L + 5. Therefore, the terminal 2 and the terminal 3 receive the multicast service 3 sent by the base station in the time slot L +1, if the PDSCH decoding is wrong, NACK is fed back on the feedback resource 2 in the time slot L +5, and the base station detects whether there is a terminal sending NACK on the feedback resource 2 in the time slot L +5, and if yes, retransmission is performed.

In a third scenario, the base station configures an auxiliary feedback resource for the user, as shown in fig. 6.

The auxiliary feedback resource allocation method refers to fig. 3 or fig. 4. The feedback resource configuration of table 2 is adopted, and the auxiliary feedback resource is additionally configured. The base station sends multicast service 1 in time slot L, corresponding to multicast identifier G-RNTI1, k1 in DCI indicates 4, namely, feedback is carried out in time slot L + 4. Therefore, the terminal 1 and the terminal 3 receive the multicast service 1 sent by the base station in the time slot L, and if both PDSCHs are decoded incorrectly, both the terminal 1 and the terminal 3 feed back NACK on the feedback resource 1 of the time slot L +4, and similarly, the base station sends the multicast service 3 in the time slot L +1, where k1 is indicated as 3 in DCI corresponding to the multicast identifier G-RNTI3, that is, fed back in the time slot L + 4. Therefore, the terminal 2 and the terminal 3 receive the multicast service 3 sent by the base station in the time slot L, if both PDSCHs are decoded incorrectly, both the terminal 2 and the terminal 3 feed back NACK on the feedback resource 3 of the time slot L +4, and since the feedback resources 1 and 3 are completely overlapped in the time domain, the user 3 cannot send both feedbacks at the same time, and therefore, the user 3 does not send NACK on the feedback resources 1 and 3, but sends NACK on the auxiliary resource.

In summary, the method of the embodiment of the present application provides a feedback resource allocation and indication method when the multicast PDSCH supports feedback of only HARQ NACK. The method comprises the steps of configuring feedback resources for a terminal according to the semi-static state of the service and the feedback resources according to the user, and combining the method with the dynamic indication, and also provides a method for configuring auxiliary resources, thereby effectively solving the problem that a plurality of NACK-only feedbacks of one terminal cannot be fed back in one time slot.

As shown in fig. 7, the method of the embodiment of the present application includes:

step 701, a network side device sends resource configuration information, where the resource configuration information is used to configure a feedback resource of a multicast service.

The network side equipment sends the resource configuration information, so that the terminal determines the feedback resource of the current multicast service according to the resource configuration information after receiving the resource configuration information of the feedback resource for configuring the multicast service, so as to use the feedback resource for HARQ feedback in the following process.

Optionally, before the network side device sends the resource configuration information, the method includes:

the network side equipment determines resource configuration information corresponding to one or more feedback resources according to the multicast service type supported by the terminal, wherein the one or more feedback resources are associated with the multicast service type supported by the terminal.

Optionally, the resource configuration information corresponds to a feedback resource set, and the feedback resource set is preset.

Optionally, the resource configuration information is further used to configure an auxiliary feedback resource of the multicast service;

Optionally, the resource configuration information includes frequency domain information of the resource, and the frequency domain information includes starting position information of the resource.

Optionally, the starting position information is a first identifier, and the first identifier is used to indicate an offset between a first resource block and a second resource block;

Optionally, the resource configuration information includes time domain information of the resource, where the time domain information includes a starting symbol position and a time domain length of the resource in a time slot.

It should be noted that this method is implemented in cooperation with the multicast feedback processing method executed by the terminal, and the implementation manner of the embodiment of the multicast feedback processing method executed by the terminal is applicable to this method, and the same technical effect can be achieved.

It should be further noted that, in the multicast feedback processing method executed by the terminal according to the embodiment of the present application, the execution main body may be a multicast feedback processing apparatus executed by the terminal, or a control module in the multicast feedback processing apparatus for executing the loaded multicast feedback processing method. In the embodiment of the present application, a multicast feedback processing method executed by a multicast feedback processing apparatus is taken as an example to describe the multicast feedback processing method provided in the embodiment of the present application.

As shown in fig. 8, the multicast feedback processing apparatus according to the embodiment of the present application includes:

a receiving module 810, configured to receive resource configuration information sent by a network side device, where the resource configuration information is used to configure a feedback resource of a multicast service;

a processing module 820, configured to determine a feedback resource of the current multicast service according to the resource configuration information.

Optionally, the resource configuration information corresponds to one or more feedback resources, and the one or more feedback resources are associated with a multicast service type supported by a terminal; or,

wherein the auxiliary feedback resource is used for sending feedback information under the condition that a plurality of feedback information needs to be fed back.

Optionally, the resource configuration information includes frequency domain information of the resource, and the frequency domain information includes start position information of the resource.

Optionally, the resource configuration information includes time domain information of the resource, where the time domain information includes a start symbol position and a time domain length of the resource in the time slot.

Optionally, the processing module is further configured to:

receiving downlink control information under the condition that feedback resources corresponding to the resource configuration information are associated with the multicast service types supported by the terminal and the feedback resources associated with the multicast service types to which the current multicast service belongs comprise a plurality of feedback resources;

and determining the feedback resources indicated by the first feedback resource identifier in the plurality of feedback resources according to the first feedback resource identifier carried by the downlink control information.

Optionally, the first feedback resource identifier is:

k1 bits of indication information, wherein K1 is an integer greater than 0; or

A Control Channel Element (CCE) identifier; or

And K2 bits of indication information and CCE identification joint indication, wherein K2 is an integer larger than 0.

Optionally, the processing module is further configured to:

receiving downlink control information under the condition of a feedback resource set corresponding to the resource configuration information;

and determining the feedback resource indicated by the second feedback resource identifier in the feedback resource set according to the second feedback resource identifier carried by the downlink control information.

Optionally, the second feedback resource identifier is:

k3 bits of indication information, wherein K3 is an integer greater than 0; or

CCE identification; or alternatively

After receiving resource configuration information of feedback resources for configuring multicast services, which is sent by network side equipment, the device determines the feedback resources of the current multicast services according to the resource configuration information, so that HARQ feedback can be performed by using the feedback resources in the subsequent process.

The multicast feedback processing apparatus in the embodiment of the present application may be an apparatus, an apparatus or an electronic device having an operating system, or a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminal includes, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a self-service machine, or the like, and the embodiment of the present application is not particularly limited.

The multicast feedback processing apparatus provided in this embodiment of the present application can implement each process implemented by the terminal in the method embodiment of fig. 2, and is not described here again to avoid repetition.

As shown in fig. 9, the multicast feedback processing apparatus according to the embodiment of the present application includes:

a sending module 910, configured to send resource configuration information, where the resource configuration information is used to configure a feedback resource of a multicast service.

Optionally, the apparatus further comprises:

the determining module is configured to determine resource configuration information corresponding to one or more feedback resources according to a multicast service type supported by a terminal, where the one or more feedback resources are associated with the multicast service type supported by the terminal.

Optionally, the resource configuration information includes time domain information of the resource, where the time domain information includes a start symbol position and a time domain length of the resource in a time slot.

The device sends the resource configuration information, so that the terminal determines the feedback resource of the current multicast service according to the resource configuration information after receiving the resource configuration information of the feedback resource for configuring the multicast service, so as to use the feedback resource for HARQ feedback in the following process.

Optionally, as shown in fig. 10, an embodiment of the present application further provides a communication device, which includes a processor 1001, a memory 1002, and a program or an instruction stored in the memory 1002 and executable on the processor 1001, for example, when the communication device 1000 is a terminal, the program or the instruction is executed by the processor 1001 to implement each process of the foregoing multicast feedback processing method embodiment, and the same technical effect can be achieved. When the communication device 1000 is a network device, the program or the instruction is executed by the processor 1001 to implement the processes of the foregoing multicast feedback processing method embodiment, and the same technical effect can be achieved, and is not described herein again to avoid repetition.

The embodiment of the present application further provides a terminal, which includes a processor and a communication interface, where the communication interface is configured to receive resource configuration information sent by a network side device, the resource configuration information is used to configure a feedback resource of a multicast service, and the processor is configured to determine the feedback resource of a current multicast service according to the resource configuration information. The terminal embodiment corresponds to the terminal-side method embodiment, and all implementation processes and implementation modes of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 11 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present application.

The terminal 1100 includes, but is not limited to: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110, among other components.

Those skilled in the art will appreciate that terminal 1100 can also include a power supply (e.g., a battery) for powering the various components, which can be logically coupled to processor 1110 via a power management system to facilitate managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 11 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or arrange different components, and thus, the detailed description is omitted here.

It should be understood that in the embodiment of the present application, the input Unit 1104 may include a Graphics Processing Unit (GPU) 11041 and a microphone 11042, and the Graphics processor 11041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1107 includes a touch panel 11071 and other input devices 11072. A touch panel 11071, also called a touch screen. The touch panel 11071 may include two portions of a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment of the application, the radio frequency unit 1101 receives downlink data from a network side device and then processes the downlink data to the processor 1110; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1109 may be used for storing software programs or instructions as well as various data. The memory 1109 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 1109 may include a high-speed random access Memory and may also include a nonvolatile Memory, which may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1110 may include one or more processing units; alternatively, the processor 1110 may integrate an application processor, which primarily handles operating system, user interface, and applications or instructions, etc., and a modem processor, which primarily handles wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1110.

The radio frequency unit 1101 is configured to receive resource configuration information sent by a network side device, where the resource configuration information is used to configure a feedback resource of a multicast service;

a processor 1110, configured to determine a feedback resource of the current multicast service according to the resource configuration information.

After the terminal receives the resource configuration information of the feedback resource for configuring the multicast service, which is sent by the network side equipment, the terminal determines the feedback resource of the current multicast service according to the resource configuration information, so that the feedback resource can be used for carrying out HARQ feedback in the subsequent process.

Optionally, the radio frequency unit 110 is further configured to receive the downlink control information when a feedback resource corresponding to the resource configuration information is associated with a multicast service type supported by the terminal, and a feedback resource associated with the multicast service type to which the current multicast service belongs includes multiple feedback resources;

the processor 1110 is further configured to determine, according to a first feedback resource identifier carried by the downlink control information, a feedback resource indicated by the first feedback resource identifier from among the multiple feedback resources.

Optionally, the radio frequency unit 110 is further configured to receive downlink control information under the condition of one feedback resource set corresponding to the resource configuration information;

the processor 1110 is further configured to determine, according to a second feedback resource identifier carried in the downlink control information, a feedback resource indicated by the second feedback resource identifier in the feedback resource set.

The embodiment of the present application further provides a network side device, which includes a processor and a communication interface, where the communication interface is configured to send resource configuration information, and the resource configuration information is used to configure a feedback resource of a multicast service. The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 12, the network device 1200 includes: antenna 121, rf device 122, and baseband device 123. The antenna 121 is connected to a radio frequency device 122. In the uplink direction, the rf device 122 receives information through the antenna 121 and sends the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes information to be transmitted and transmits the information to the rf device 122, and the rf device 122 processes the received information and transmits the processed information through the antenna 121.

The above band processing means may be located in the baseband device 123, and the method performed by the network side device in the above embodiment may be implemented in the baseband device 123, where the baseband device 123 includes a processor 124 and a memory 125.

The baseband device 123 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 12, wherein one chip, for example, the processor 124, is connected to the memory 125 to call up the program in the memory 125 to perform the network device operation shown in the above method embodiment.

The baseband device 123 may further include a network interface 126 for exchanging information with the radio frequency device 122, for example, a Common Public Radio Interface (CPRI).

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 125 and capable of being executed on the processor 124, the processor 124 calls the instructions or programs in the memory 125 to execute the method executed by each module shown in fig. 9, and achieve the same technical effect, which is not described herein for avoiding repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing multicast feedback processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the foregoing multicast feedback processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

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 phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer 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 method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims

1. A multicast feedback processing method, comprising:

2. The method of claim 1, wherein the resource configuration information corresponds to one or more feedback resources, and wherein the one or more feedback resources are associated with multicast service types supported by the terminal; or,

3. The method of claim 1, wherein the resource configuration information is further used for configuring an auxiliary feedback resource of a multicast service;

4. The method according to claim 1 or 3, wherein the resource configuration information comprises frequency domain information of the resource, and the frequency domain information comprises starting position information of the resource.

5. The method of claim 4, wherein the frequency domain information further comprises a starting position information of a second hop in case the feedback resource supports frequency hopping within a time slot.

6. The method of claim 4, wherein the starting position information is a first flag indicating an offset between a first resource block and a second resource block;

the first resource block is a resource block where a starting position is located, and the second resource block is a resource block where a lower boundary of a public frequency domain resource where the starting position is located.

7. The method according to claim 1 or 3, wherein the resource configuration information comprises time domain information of the resource, and the time domain information comprises a starting symbol position and a time domain length of the resource in a time slot.

8. The method according to claim 2, wherein the determining, by the terminal, the feedback resource of the current multicast service according to the resource configuration information comprises:

and the terminal determines the feedback resources indicated by the first feedback resource identifier in the plurality of feedback resources according to the first feedback resource identifier carried by the downlink control information.

9. The method of claim 8, wherein the first feedback resource identifier is:

k1 bits of indication information, wherein K1 is an integer greater than 0; or alternatively

A Control Channel Element (CCE) identifier; or

10. The method according to claim 2, wherein the determining, by the terminal, the feedback resource of the current multicast service according to the resource configuration information comprises:

11. The method of claim 10, wherein the second feedback resource is identified as:

k3 bits of indication information, wherein K3 is an integer greater than 0; or

A CCE identification; or alternatively

12. A multicast feedback processing method, comprising:

13. The method according to claim 12, wherein before the network side device sends the resource configuration information, the method comprises:

14. The method of claim 12, wherein the resource configuration information corresponds to a feedback resource set, and wherein the feedback resource set is preset.

15. The method of claim 12, wherein the resource configuration information is further used for configuring an auxiliary feedback resource of a multicast service;

16. The method according to claim 12 or 15, wherein the resource configuration information comprises frequency domain information of a resource, and the frequency domain information comprises starting position information of the resource.

17. The method of claim 16, wherein the frequency domain information further comprises a start position information of a second hop in case the feedback resource supports frequency hopping within a time slot.

18. The method of claim 16, wherein the starting location information is a first flag indicating an offset of a first resource block from a second resource block;

19. The method according to claim 12 or 15, wherein the resource configuration information comprises time domain information of a resource, and the time domain information comprises a starting symbol position and a time domain length of the resource in a time slot.

20. A multicast feedback processing apparatus, comprising:

21. The apparatus of claim 20, wherein the resource configuration information corresponds to one or more feedback resources, and wherein the one or more feedback resources are associated with multicast service types supported by a terminal; or,

22. The apparatus of claim 20, wherein the resource configuration information is further used for configuring an auxiliary feedback resource of a multicast service;

23. A multicast feedback processing apparatus, comprising:

24. The apparatus of claim 23, further comprising:

25. The apparatus of claim 23, wherein the resource configuration information corresponds to a feedback resource set, and wherein the feedback resource set is preset.

26. A terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the multicast feedback processing method according to any of claims 1 to 11.

27. A network-side device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the multicast feedback processing method according to any one of claims 12 to 19.

28. A readable storage medium, on which a program or instructions are stored, which program or instructions, when executed by a processor, implement the multicast feedback processing method of any of claims 1 to 11, or the steps of the multicast feedback processing method of any of claims 12 to 19.