CN113678500A

CN113678500A - Feedback resource allocation method, communication method, device and communication equipment

Info

Publication number: CN113678500A
Application number: CN201980095029.3A
Authority: CN
Inventors: 王淑坤; 徐伟杰; 卢前溪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2021-11-19
Anticipated expiration: 2039-09-23
Also published as: CN113678500B; WO2021056155A1

Abstract

The embodiment of the application provides a feedback resource allocation method, a communication method, a device and communication equipment, wherein the method comprises the following steps: the method comprises the steps that network equipment sends first configuration information, wherein the first configuration information is used for determining a first feedback resource corresponding to a Multimedia Broadcast Multicast Service (MBMS); the first feedback resource is used for terminal equipment to send Negative Acknowledgement (NACK) information aiming at the MBMS service.

Description

Feedback resource allocation method, communication method, device and communication equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a feedback resource configuration method, a communication method, a device and communication equipment.

Background

Multimedia Broadcast Multicast Service (MBMS) is a technology for transmitting data from one data source to a plurality of users through a shared network resource, which can provide Multimedia services while efficiently utilizing the network resource to realize broadcasting and multicasting of Multimedia services at a higher rate (e.g., 256 kbps).

In a New Radio (NR) system, many scenarios need to support multicast and broadcast service requirements, such as in car networking, industrial internet, etc. It is necessary to introduce MBMS in NR. In NR, a connected unicast scenario is that there is Hybrid Automatic Repeat-reQuest (HARQ) feedback. For the MBMS scene in NR, no feedback mechanism is introduced, that is, the terminal device receives the MBMS service without feedback, and the transmission reliability of the MBMS service cannot be guaranteed.

Disclosure of Invention

The embodiment of the application provides a feedback resource allocation method, a communication method, a device and communication equipment.

The feedback resource allocation method provided by the embodiment of the application comprises the following steps:

network equipment sends first configuration information, wherein the first configuration information is used for determining a first feedback resource corresponding to an MBMS service; the first feedback resource is used for receiving Negative Acknowledgement (NACK) information which is sent by a terminal device and aims at the MBMS service.

the method comprises the steps that network equipment sends first configuration information, the first configuration information is used for determining a plurality of feedback resources corresponding to an MBMS service, and the plurality of feedback resources are used for sending feedback information aiming at the MBMS service by a plurality of terminal equipment.

The communication method provided by the embodiment of the application comprises the following steps:

the method comprises the steps that terminal equipment receives first configuration information, wherein the first configuration information is used for determining a first feedback resource corresponding to an MBMS service;

and the terminal equipment sends NACK information on the first feedback resource.

the method comprises the steps that terminal equipment receives first configuration information, wherein the first configuration information is used for determining a plurality of feedback resources corresponding to an MBMS service;

and the terminal equipment determines a first feedback resource from the plurality of feedback resources and sends feedback information on the first feedback resource.

The feedback resource allocation device provided in the embodiment of the present application includes:

a sending unit, configured to send first configuration information, where the first configuration information is used to determine a first feedback resource corresponding to an MBMS service; and the first feedback resource is used for the terminal equipment to send NACK information aiming at the MBMS.

a sending unit, configured to send first configuration information, where the first configuration information is used to determine multiple feedback resources corresponding to an MBMS service, and the multiple feedback resources are used for multiple terminal devices to send feedback information for the MBMS service.

The communication device provided by the embodiment of the application comprises:

a receiving unit, configured to receive first configuration information, where the first configuration information is used to determine a first feedback resource corresponding to an MBMS service;

a feedback unit, configured to send NACK information on the first feedback resource.

a receiving unit, configured to receive first configuration information, where the first configuration information is used to determine multiple feedback resources corresponding to an MBMS service;

a feedback unit, configured to determine a first feedback resource from the multiple feedback resources, and send feedback information on the first feedback resource.

The communication device provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the feedback resource allocation method or the communication method.

The chip provided by the embodiment of the application is used for realizing the feedback resource configuration method or the communication method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the feedback resource configuration method or the communication method.

The computer-readable storage medium provided in the embodiments of the present application is used for storing a computer program, and the computer program enables a computer to execute the feedback resource configuration method or the communication method described above.

The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions enable a computer to execute the feedback resource allocation method or the communication method described above.

The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the feedback resource allocation method or the communication method described above.

By the technical scheme, the NR system supports the broadcast and multicast of the MBMS, and meanwhile, a scheme is provided, namely NACK feedback of one terminal device is supported by configuring a first feedback resource. Or, independent NACK feedback or ACK feedback of a plurality of terminal devices is supported by configuring a plurality of feedback resources. Further, the retransmission of the service data is performed based on the feedback information of the MBMS service, thereby ensuring the reliability of the service data transmission.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

FIG. 2 is a diagram of a first SIB related configuration provided by an embodiment of the present application;

fig. 3 is a schematic diagram of a PTM configuration transmission mechanism provided in an embodiment of the present application;

fig. 4 is a PTM channel and a map thereof provided by an embodiment of the present application;

fig. 5 is a first flowchart illustrating a feedback resource allocation method according to an embodiment of the present application;

fig. 6 is a flowchart illustrating a second method for configuring feedback resources according to an embodiment of the present application;

fig. 7 is a first schematic structural diagram of a feedback resource allocation apparatus according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a feedback resource allocation apparatus according to an embodiment of the present application;

fig. 9 is a first schematic structural component diagram of a communication device according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

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

FIG. 12 is a schematic structural diagram of a chip of an embodiment of the present application;

fig. 13 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

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

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a system, a 5G communication system, a future communication system, or the like.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device may be a mobile switching center, a relay station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a future communication system, and the like.

The communication system 100 further comprises at least one terminal 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal can refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminals 120.

Alternatively, the 5G communication system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminals, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminals within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above and are not described again here; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

With the pursuit of speed, latency, high-speed mobility, energy efficiency and the diversity and complexity of the services in future life, the third generation partnership project (3)^rdGeneration Partnership Project, 3GPP) the international organization for standardization began developing 5G. The main application scenarios of 5G are: enhanced Mobile Ultra wide band (eMBB), Low-Latency high-reliability communication (URLLC), and massive Machine-Type communication (mMTC).

On the one hand, the eMBB still targets users to obtain multimedia content, services and data, and its demand is growing very rapidly. On the other hand, because the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., and the difference between the capabilities and the requirements is relatively large, it cannot be said that it must be analyzed in detail in conjunction with a specific deployment scenario. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety, and the like. Typical characteristics of mtc include: high connection density, small data volume, insensitive time delay service, low cost and long service life of the module, etc.

RRC state

In order to reduce air interface signaling, quickly recover wireless connection, and quickly recover data service, 5G defines a new Radio Resource Control (RRC) state, that is, an RRC INACTIVE (RRC _ INACTIVE) state. This state is distinguished from the RRC IDLE (RRC IDLE) state and the RRC ACTIVE (RRC ACTIVE) state. Wherein,

1) RRC _ IDLE state (IDLE state for short): mobility is UE-based cell selection reselection, paging is initiated by a Core Network (CN), and a paging area is configured by the CN. The base station side has no UE context and no RRC connection.

2) RRC _ CONNECTED state (CONNECTED state for short): there is an RRC connection and there is a UE context on the base station side and the UE side. The network side knows that the location of the UE is at a specific cell level. Mobility is network side controlled mobility. Unicast data may be transmitted between the UE and the base station.

3) RRC _ INACTIVE state (INACTIVE state for short): mobility is UE-based cell selection reselection, there is a connection between CN-NRs, UE context exists on a certain base station, paging is triggered by RAN, RAN-based paging area is managed by RAN, and network side knows that UE location is based on RAN's paging area level.

MBMS

The 3GPP Release 6(Release 6, R6) introduced Multimedia Broadcast Multicast Service (MBMS), which is a technology for transmitting data from one data source to multiple UEs through shared network resources, and can provide Multimedia services while effectively utilizing network resources to implement Broadcast and Multicast of higher-rate (e.g., 256kbps) Multimedia services.

Since the MBMS spectrum efficiency in 3GPP R6 is low, it is not enough to effectively carry and support the operation of mobile tv type services. Therefore, in LTE, 3GPP explicitly proposes to enhance the support capability for downlink high-speed MBMS services, and determines the design requirements for the physical layer and air interface.

The 3GPP R9 introduces evolved MBMS (eMBMS) into LTE. eMBMS proposes a Single Frequency Network (SFN) concept, that is, a Multimedia Broadcast multicast service Single Frequency Network (MBSFN), where MBSFN employs a uniform Frequency to simultaneously transmit service data in all cells, but needs to ensure synchronization between the cells. The method can greatly improve the distribution of the overall signal-to-noise ratio of the cell, and the frequency spectrum efficiency can be correspondingly and greatly improved. eMBMS implements broadcast and multicast of services based on IP multicast protocol.

In LTE or LTE-Advanced (LTE-a), MBMS has only a broadcast bearer mode and no multicast bearer mode. In addition, the reception of the MBMS service is applicable to the idle-state or connected-state UE.

The 3GPP R13 introduces a Single Cell Point To multipoint (SC-PTM) concept, and SC-PTM is based on the MBMS network architecture.

MBMS introduces new logical channels including a Single Cell-Multicast Control Channel (SC-MCCH) and a Single Cell-Multicast Transport Channel (SC-MTCH). The SC-MCCH and SC-MTCH are mapped to a Downlink-Shared Channel (DL-SCH), and the DL-SCH is further mapped to a Physical Downlink-Shared Channel (PDSCH), wherein the SC-MCCH and SC-MTCH belong to a logical Channel, the DL-SCH belongs to a transport Channel, and the PDSCH belongs to a Physical Channel. The SC-MCCH and SC-MTCH do not support Hybrid Automatic Repeat reQuest (HARQ) operation.

MBMS introduces a new System Information Block (SIB) type, SIB 20. Specifically, the configuration information of the SC-MCCH is transmitted through SIB20, and one cell has only one SC-MCCH. The configuration information of the SC-MCCH comprises: the modification period of the SC-MCCH, the repetition period of the SC-MCCH, and the scheduling of the wireless frame and the subframe of the SC-MCCH. Further, 1) the boundary of the modification period of the SC-MCCH satisfies SFN mod m ═ 0, where SFN represents the system frame number of the boundary, and m is the modification period of the SC-MCCH (i.e., SC-MCCH-modification period) configured in SIB 20. 2) And scheduling the radio frame of the SC-MCCH to meet the following requirements: SFN mod MCCH-repetition period ═ MCCH-Offset, where SFN represents the system frame number of a radio frame, MCCH-repetition period represents the repetition period of SC-MCCH, and MCCH-Offset represents the Offset of SC-MCCH. 3) The sub-frame of the SC-MCCH is scheduled and indicated by SC-MCCH-Subframe.

The SC-MCCH is scheduled through a Physical Downlink Control Channel (PDCCH). On one hand, a new Radio Network Temporary Identity (RNTI), that is, a Single Cell RNTI (SC-RNTI) is introduced to identify a PDCCH (e.g., SC-MCCH PDCCH) for scheduling an SC-MCCH, and optionally, the SC-RNTI is fixedly valued as FFFC. On the other hand, a new RNTI, namely a Single Cell Notification RNTI (SC-N-RNTI) is introduced to identify a PDCCH (e.g., Notification PDCCH) for indicating a change Notification of the SC-MCCH, and optionally, the SC-N-RNTI is fixedly valued as FFFB; further, the change notification may be indicated by one bit of 8 bits (bits) of the DCI 1C. In LTE, the configuration information of SC-PTM is based on SC-MCCH configured by SIB20, and then SC-MCCH configures SC-MTCH which is used for transmitting service data.

Specifically, the SC-MCCH transmits only one message (i.e., SCPTMConfiguration) for configuring configuration information of the SC-PTM. The configuration information of SC-PTM includes: temporary Mobile Group Identity (TMGI), session Identity (session id), Group RNTI (G-RNTI), Discontinuous Reception (DRX) configuration information, SC-PTM service information of the neighbor cell, and the like. It should be noted that SC-PTM in R13 does not support Robust Header Compression (ROHC) function.

The downlink discontinuous reception of SC-PTMs is controlled by the following parameters: ondurationTimerSCPTM, drx-InactivetTimeSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

When [ (SFN x 10) + subframe number ] module (SC-MTCH-scheduling cycle) ═ SC-MTCH-scheduling offset is satisfied, starting a timer onDurationTimerSCPTM;

when receiving downlink PDCCH dispatching, starting a timer drx-InactivetyTimerSCPTM;

the downlink SC-PTM service is received only when the timer onDurationTimerSCPTM or drx-inactivityttimerscptm is running.

SC-PTM service continuity adopts the MBMS service continuity concept based on SIB15, namely, SIB15+ MBMSIntestrIndication. The traffic continuity of idle UEs is based on the concept of frequency priority.

In NR, many scenarios need to support multicast and broadcast traffic needs, such as in car networking, industrial internet, etc. It is necessary to introduce MBMS in NR.

In NR, a unicast scenario of connected state is with HARQ feedback. For the MBMS scene in NR, no feedback mechanism is introduced, that is, no feedback is required for the terminal device to receive the MBMS service, no remedial measure is taken for the MBMS service data loss, and the transmission reliability of the MBMS service cannot be guaranteed. For some scenarios in NR, such as V2X, industrial network internet, etc., the reliability requirement for multicast transmission is higher and higher, so introducing a feedback mechanism for MBMS to ensure the reliability of service transmission (i.e., to ensure that all members in the multicast group receive service data) needs to be considered and introduced. Therefore, the following technical scheme of the embodiment of the application is provided. According to the technical scheme of the embodiment of the application, an HARQ feedback and repeated sending mechanism is introduced into multicast, so that the reliability of service data transmission in a group is ensured.

In the technical solution of the embodiment of the present application, a new SIB (referred to as a first SIB) is defined, and referring to fig. 2, the first SIB includes configuration information of a first MCCH, where the first MCCH is a control channel of an MBMS service, in other words, the first SIB is used to configure configuration information of a control channel of an NR MBMS, and optionally, the control channel of the NR MBMS may also be referred to as an NR MCCH (i.e., the first MCCH).

Further, the first MCCH is used to carry a first signaling, and in this embodiment of the present application, the name of the first signaling is not limited, for example, the first signaling is signaling a, the first signaling includes configuration information of at least one first MTCH, where the first MTCH is a traffic channel (also referred to as a data channel or a transport channel) of an MBMS service, and the first MTCH is used to transmit MBMS service data (e.g., service data of NR MBMS). In other words, the first MCCH is used to configure configuration information of a traffic channel of the NR MBMS, which may also be called NR MTCH (i.e., the first MTCH) optionally.

Specifically, the first signaling is used to configure a service channel of the NR MBMS, service information corresponding to the service channel, and scheduling information corresponding to the service channel. Further, optionally, the service information corresponding to the service channel, for example, the identification information for identifying the service, such as the TMGI, the session id, and the like. The scheduling information corresponding to the traffic channel, for example, the RNTI used when the MBMS service data corresponding to the traffic channel is scheduled, for example, G-RNTI, DRX configuration information, and the like.

It should be noted that the transmission of the first MCCH and the first MTCH is scheduled based on the PDCCH. Wherein, the RNTI used by the PDCCH for scheduling the first MCCH uses a network-wide unique identifier, which is a fixed value. The RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.

Further, the first MCCH also carries at least one of: the first indication information is used for indicating whether the MBMS service (corresponding to the TMGI and/or the session identifier) needs HARQ feedback or not; second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service; and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service. Here, when the terminal device is registered to the MBMS service, the network device assigns a member index number to the terminal device registered to the MBMS service.

It should be noted that, in the embodiment of the present application, naming of the first SIB, the first MCCH, and the first MTCH is not limited. For convenience of description, the first SIB may also be abbreviated as SIB, the first MCCH may also be abbreviated as MCCH, and the first MTCH may also be abbreviated as MTCH, and referring to fig. 3, a PDCCH (i.e., MCCH PDCCH) for scheduling MCCH and a notification PDCCH are configured through SIB, wherein a PDSCH (i.e., MCCH PDSCH) for transmitting MCCH is scheduled through DCI carried by MCCH PDCCH. Further, M PDCCHs (i.e., MTCH 1PDCCH, MTCH 2PDCCH, …, MTCH M PDCCH) for scheduling MTCH are configured through the MCCH, wherein DCI carried by the MTCH n PDCCH schedules a PDSCH (i.e., MTCH n PDSCH) for transmitting MTCH n, n being an integer of 1 or more and M or less. Referring to fig. 4, MCCH and MTCH are mapped to DL-SCH, which belong to a logical channel, DL-SCH which belongs to a transport channel, and PDSCH which belongs to a physical channel, and further DL-SCH which is mapped to PDSCH.

Fig. 5 is a first flowchart of a feedback resource allocation method provided in an embodiment of the present application, and as shown in fig. 5, the feedback resource allocation method includes the following steps:

step 501: network equipment sends first configuration information, wherein the first configuration information is used for determining a first feedback resource corresponding to an MBMS service; and the first feedback resource is used for the terminal equipment to send NACK information aiming at the MBMS.

In the embodiment of the application, network equipment sends first configuration information, terminal equipment receives the first configuration information, and the terminal equipment sends NACK information on the first feedback resource. Further, optionally, the network device may be a base station, for example, a gbb.

In this embodiment of the present application, the first configuration information is carried in the first MCCH or the first SIB. Here, the first MCCH and the first SIB may be understood with reference to the foregoing related description. It is noted that the first MCCH also carries at least one of the following: first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not; second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service; and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service. Further, the network device allocates a member index number to the terminal device registered to the MBMS service.

In this embodiment of the present application, the first feedback resource is a PUCCH feedback resource for an MBMS service. It may also be understood that the first feedback resource is a PUCCH feedback resource corresponding to multicast.

In an optional embodiment of the present application, the first configuration information is used to determine a first PUCCH resource set (PUCCH resource set), and the first PUCCH resource set is used to determine the first feedback resource.

For example: the first configuration information is used to determine a first index value, and a PUCCH feedback resource set associated with the first index value may be determined through a configuration list as shown in table 1 below.

TABLE 1

In another optional embodiment of the present application, the first configuration information is used to determine the first feedback resource.

In this embodiment of the present application, the first feedback resource is only used for feeding back NACK information, and does not feed back ACK information. It can be seen that, for a certain data, if the data is not correctly received (or completely received), the terminal device sends NACK information on the first feedback resource; if the data is received correctly (or completely), no information needs to be fed back.

In an optional embodiment of the present application, if the network device receives NACK information on the first feedback resource, the network device retransmits a service data packet corresponding to the NACK information, where the service data packet is a data packet of the MBMS service. As can be seen, as long as the network device receives NACK information on the first feedback resource, it indicates that the terminal device has not correctly received the service data packet, and the network device triggers HARQ retransmission; on the contrary, if the network device does not receive NACK information on the first feedback resource, it indicates that all terminal devices correctly receive the service data packet, and the network device does not trigger HARQ retransmission.

The technical solution of the embodiment of the present application further provides a communication method, including: the method comprises the steps that terminal equipment receives first configuration information, wherein the first configuration information is used for determining a first feedback resource corresponding to an MBMS service; and the terminal equipment sends NACK information on the first feedback resource. It should be noted that the first feedback resource herein can be understood by referring to the foregoing related description.

Fig. 6 is a second flowchart of a feedback resource allocation method according to an embodiment of the present application, where as shown in fig. 6, the feedback resource allocation method includes the following steps:

step 601: the method comprises the steps that network equipment sends first configuration information, the first configuration information is used for determining a plurality of feedback resources corresponding to an MBMS service, and the plurality of feedback resources are used for sending feedback information aiming at the MBMS service by a plurality of terminal equipment.

In the embodiment of the application, a network device sends first configuration information, a terminal device receives the first configuration information, the terminal device determines a first feedback resource from a plurality of feedback resources, and sends feedback information on the first feedback resource. Further, optionally, the network device may be a base station, for example, a gbb.

In the embodiment of the present application, the feedback resource is a PUCCH feedback resource for an MBMS service. It can also be understood that the feedback resource is a PUCCH feedback resource corresponding to multicast. And the network equipment configures a plurality of PUCCH feedback resources corresponding to the multicast.

In the embodiment of the present application, the plurality of feedback resources may be configured in the following manner:

in a first mode

The first configuration information is used to determine a plurality of PUCCH resource sets, each PUCCH resource set of the plurality of PUCCH resource sets is used to determine one feedback resource.

In an optional embodiment, the plurality of PUCCH resource sets belong to a first configuration list, the first configuration list includes configuration information of N PUCCH resource sets, N being an integer equal to 16. Here, each PUCCH resource set corresponds to one index value, and a plurality of PUCCH resource sets corresponding to a plurality of index values may be determined by table 1 described above.

In another optional embodiment, the plurality of PUCCH resource sets belong to a first configuration list, the first configuration list includes configuration information of N PUCCH resource sets, N being an integer greater than 16. In specific implementation, the configuration of the PUCCH resource set in table 1 is extended, so as to support the configuration of a greater number (greater than 16) of PUCCH resource sets.

Mode two

The first configuration information is used to determine at least one PUCCH resource set, and for each PUCCH resource set of the at least one PUCCH resource set, the PUCCH resource set and member index numbers of the plurality of terminal devices are used to determine a plurality of feedback resources.

In specific implementation, when each PUCCH resource set calculates Rpucch resources (i.e., feedback resources), a member index number is introduced to expand so that one PUCCH resource set can support feedback resources of multiple members (i.e., terminal devices).

It should be noted that the plurality of feedback resources and the member index numbers of the plurality of terminal devices have a corresponding relationship. Here, when the application layer establishes a communication group (i.e., a multicast group), each member has an index number, and when the feedback resources are configured, the index numbers of the members correspond to the feedback resources one to one.

In an optional embodiment of the present application, the network device receives, on the multiple feedback resources, ACK information and/or NACK information for the MBMS service sent by the multiple terminal devices. Here, when receiving the MBMS service, each terminal device sends ACK information or NACK information to the network side on its own feedback resource, and triggers the network side to perform retransmission.

In this embodiment of the present application, triggering network equipment to retransmit the first data may adopt any one of the following mechanisms:

(A) retransmission mechanism one

After the network equipment sends the first data, setting a first counter to be 0, and starting a first timer; the first data is the data of the MBMS service; after the network equipment receives ACK information aiming at the first data every time, the first counter is controlled to be increased by 1; if the value of the first counter is equal to a first threshold value and the first timer is in a running state, stopping the first timer and determining that the first data is correctly received by the plurality of terminal devices; and if the first timer is overtime, the network equipment retransmits the first data.

In an optional implementation manner, the first threshold is equal to the number of members in a multicast group corresponding to the MBMS service; or, the first threshold is smaller than the number of members in the multicast group corresponding to the MBMS service.

In an alternative embodiment, the first threshold is configured in a first SIB or in a first MCCH.

In a specific implementation, the first data is a Transport Block (TB). After the network equipment sends the TB, maintaining a counter (counter) for each TB, starting a timer (timer), adding 1 to the counter each time an ACK (acknowledgement) message aiming at the TB is received, and stopping the timer when the counter is equal to the number of members in a multicast group or a preset value before the timer is overtime; if the timer times out, retransmission of the TB is triggered.

(B) Retransmission mechanism two

After the network equipment sends the first data, starting a first timer; the first data is the data of the MBMS service; if the network device does not receive NACK information aiming at the first data before the first timer is overtime, determining that the first data is correctly received by the plurality of terminal devices; if the network device receives NACK information aiming at the first data before the first timer is overtime, the network device retransmits the first data.

In a specific implementation, the first data is a transport block TB. After the network equipment sends the TB, starting a timer (timer), and before the timer is overtime, if the network equipment does not receive NACK information aiming at the TB, the TB is considered to be correctly received; if the network device receives NACK information for the TB, retransmission of the TB is triggered.

The technical solution of the embodiment of the present application further provides a communication method, including: the method comprises the steps that terminal equipment receives first configuration information, wherein the first configuration information is used for determining a plurality of feedback resources corresponding to an MBMS service; and the terminal equipment determines a first feedback resource from the plurality of feedback resources and sends feedback information on the first feedback resource. It should be noted that the plurality of feedback resources herein can be understood with reference to the foregoing description.

Fig. 7 is a schematic structural composition diagram of a feedback resource configuration apparatus provided in an embodiment of the present application, which is applied to a network device, and as shown in fig. 7, the feedback resource configuration apparatus includes:

a sending unit 701, configured to send first configuration information, where the first configuration information is used to determine a first feedback resource corresponding to an MBMS service; and the first feedback resource is used for the terminal equipment to send NACK information aiming at the MBMS.

In an optional embodiment, the first configuration information is used to determine a first PUCCH resource set, and the first PUCCH resource set is used to determine the first feedback resource; or,

the first configuration information is used to determine the first feedback resource.

In an optional embodiment, the first configuration information is carried in a first MCCH or a first SIB.

In an optional embodiment, the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.

In an alternative embodiment, the apparatus further comprises:

an allocating unit (not shown in the figure) for allocating a member index number to the terminal equipment registered to the MBMS service.

In an alternative embodiment, the apparatus further comprises:

a processing unit 703, configured to retransmit a service data packet corresponding to the NACK information if the NACK information is received on the first feedback resource, where the service data packet is a data packet of the MBMS service.

It should be understood by those skilled in the art that the related description of the feedback resource configuration apparatus in the embodiments of the present application may be understood by referring to the related description of the feedback resource configuration method in the embodiments of the present application.

Fig. 8 is a schematic structural composition diagram of a feedback resource configuration apparatus provided in an embodiment of the present application, which is applied to a network device, and as shown in fig. 8, the feedback resource configuration apparatus includes:

a sending unit 801, configured to send first configuration information, where the first configuration information is used to determine multiple feedback resources corresponding to an MBMS service, and the multiple feedback resources are used for multiple terminal devices to send feedback information for the MBMS service.

In an optional embodiment, the first configuration information is used to determine a plurality of PUCCH resource sets, and each PUCCH resource set of the plurality of PUCCH resource sets is used to determine one feedback resource.

In an optional implementation, the plurality of PUCCH resource sets belong to a first configuration list, where the first configuration list includes configuration information of N PUCCH resource sets, and N is an integer greater than or equal to 16.

In an optional embodiment, the first configuration information is used to determine at least one PUCCH resource set, and for each of the at least one PUCCH resource set, the PUCCH resource set and the member index numbers of the plurality of terminal devices are used to determine a plurality of feedback resources.

In an optional implementation manner, the plurality of feedback resources and the member index numbers of the plurality of terminal devices have a corresponding relationship.

In an optional embodiment, the first MCCH further carries at least one of:

In an alternative embodiment, the apparatus further comprises:

a receiving unit 802, configured to receive, on the multiple feedback resources, ACK information and/or NACK information for the MBMS service sent by the multiple terminal devices.

In an alternative embodiment, the apparatus further comprises:

the processing unit 803 is configured to set a first counter to 0 after the first data is sent, and start a first timer; the first data is the data of the MBMS service; after receiving ACK information aiming at the first data every time, controlling the first counter to increase by 1; if the value of the first counter is equal to a first threshold value and the first timer is in a running state, stopping the first timer and determining that the first data is correctly received by the plurality of terminal devices; and if the first timer is overtime, retransmitting the first data.

In an optional implementation manner, the first threshold is equal to the number of members in a multicast group corresponding to the MBMS service; or,

the first threshold is smaller than the number of members in the multicast group corresponding to the MBMS service.

In an alternative embodiment, the apparatus further comprises:

the processing unit 803 is configured to start a first timer after sending the first data; the first data is the data of the MBMS service; if the NACK information aiming at the first data is not received before the first timer is overtime, the first data is determined to be correctly received by the plurality of terminal devices; and if the NACK information aiming at the first data is received before the first timer is overtime, retransmitting the first data.

In an alternative embodiment, the first data is a TB.

Fig. 9 is a schematic structural composition diagram of a communication device according to an embodiment of the present application, which is applied to a terminal device, and as shown in fig. 9, the communication device includes:

a receiving unit 901, configured to receive first configuration information, where the first configuration information is used to determine a first feedback resource corresponding to an MBMS service;

a feedback unit 902, configured to send NACK information on the first feedback resource.

In an optional embodiment, the first MCCH further carries at least one of:

Those skilled in the art will understand that the above-mentioned related description of the communication apparatus according to the embodiments of the present application can be understood by referring to the related description of the feedback resource allocation method and the communication method according to the embodiments of the present application.

Fig. 10 is a schematic structural composition diagram of a communication apparatus provided in the embodiment of the present application, which is applied to a terminal device, and as shown in fig. 10, the communication apparatus includes:

a receiving unit 1001, configured to receive first configuration information, where the first configuration information is used to determine multiple feedback resources corresponding to an MBMS service;

a feedback unit 1002, configured to determine a first feedback resource from the multiple feedback resources, and send feedback information on the first feedback resource.

In an optional embodiment, the first configuration information is used to determine at least one PUCCH resource set, and for each PUCCH resource set of the at least one PUCCH resource set, the PUCCH resource set and member index numbers of a plurality of terminal devices are used to determine a plurality of feedback resources.

In an optional embodiment, the first MCCH further carries at least one of:

Fig. 11 is a schematic structural diagram of a communication device 1100 according to an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 1100 shown in fig. 11 includes a processor 1110, and the processor 1110 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 11, the communication device 1100 may further include a memory 1120. From the memory 1120, the processor 1110 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 1120 may be a separate device from the processor 1110, or may be integrated into the processor 1110.

Optionally, as shown in fig. 11, the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, and in particular, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 1130 may include a transmitter and a receiver, among others. The transceiver 1130 may further include one or more antennas, which may be present in number.

Optionally, the communication device 1100 may specifically be a network device in the embodiment of the present application, and the communication device 1100 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 1100 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 1100 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 12 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1200 shown in fig. 12 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 12, the chip 1200 may further include a memory 1220. From the memory 1220, the processor 1210 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1220 may be a separate device from the processor 1210, or may be integrated into the processor 1210.

Optionally, the chip 1200 may further include an input interface 1230. The processor 1210 may control the input interface 1230 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 1200 may further include an output interface 1240. The processor 1210 may control the output interface 1240 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

Fig. 13 is a schematic block diagram of a communication system 1300 provided in an embodiment of the present application. As shown in fig. 13, the communication system 1300 includes a terminal device 1310 and a network device 1320.

The terminal device 1310 may be configured to implement corresponding functions implemented by the terminal device in the foregoing method, and the network device 1320 may be configured to implement corresponding functions implemented by the network device in the foregoing method, for brevity, no further description is provided here.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

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

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of feedback resource configuration, the method comprising:

the method comprises the steps that network equipment sends first configuration information, wherein the first configuration information is used for determining a first feedback resource corresponding to a Multimedia Broadcast Multicast Service (MBMS); the first feedback resource is used for terminal equipment to send Negative Acknowledgement (NACK) information aiming at the MBMS service.
The method of claim 1, wherein,

the first configuration information is used for determining a first Physical Uplink Control Channel (PUCCH) resource set, and the first PUCCH resource set is used for determining the first feedback resource; or,

the first configuration information is used to determine the first feedback resource.
The method of claim 1 or 2, wherein the first configuration information is carried in a first multicast control channel, MCCH, or in a first system information block, SIB.
The method of claim 3, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
The method of claim 4, wherein the method further comprises:

and the network equipment distributes a member index number for the terminal equipment registered to the MBMS service.
The method of any of claims 1-5, wherein the method further comprises:

and if the network equipment receives NACK information on the first feedback resource, retransmitting a service data packet corresponding to the NACK information by the network equipment, wherein the service data packet is the data packet of the MBMS.
A method of feedback resource configuration, the method comprising:

the method comprises the steps that network equipment sends first configuration information, the first configuration information is used for determining a plurality of feedback resources corresponding to an MBMS service, and the plurality of feedback resources are used for sending feedback information aiming at the MBMS service by a plurality of terminal equipment.
The method of claim 7, wherein the first configuration information is used to determine a plurality of PUCCH resource sets, each of which is used to determine one feedback resource.
The method of claim 8, wherein the plurality of PUCCH resource sets belong to a first configuration list, the first configuration list including configuration information for N PUCCH resource sets, N being an integer greater than or equal to 16.
The method of claim 7, wherein the first configuration information is used to determine at least one PUCCH resource set, and for each of the at least one PUCCH resource set, the PUCCH resource set and member index numbers of the plurality of terminal devices are used to determine a plurality of feedback resources.
The method according to any of claims 7 to 10, wherein the plurality of feedback resources and member index numbers of the plurality of terminal devices have a correspondence.
The method of any of claims 7-11, wherein the first configuration information is carried in a first MCCH or a first SIB.
The method of claim 12, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
The method of claim 13, wherein the method further comprises:

and the network equipment distributes a member index number for the terminal equipment registered to the MBMS service.
The method of any of claims 7 to 14, wherein the method further comprises:

and the network equipment receives ACK information and/or NACK information which is sent by the terminal equipment and aims at the MBMS service on the feedback resources.
The method of claim 15, wherein the method further comprises:

after the network equipment sends the first data, setting a first counter to be 0, and starting a first timer; the first data is the data of the MBMS service;

after the network equipment receives ACK information aiming at the first data every time, the first counter is controlled to be increased by 1;

if the value of the first counter is equal to a first threshold value and the first timer is in a running state, stopping the first timer and determining that the first data is correctly received by the plurality of terminal devices;

and if the first timer is overtime, the network equipment retransmits the first data.
The method of claim 16, wherein,

the first threshold is equal to the number of members in a multicast group corresponding to the MBMS service; or,

the first threshold is smaller than the number of members in the multicast group corresponding to the MBMS service.
The method of claim 16 or 17, wherein the first threshold is configured in a first SIB or in a first MCCH.
The method of claim 15, wherein the method further comprises:

after the network equipment sends the first data, starting a first timer; the first data is the data of the MBMS service;

if the network device does not receive NACK information aiming at the first data before the first timer is overtime, determining that the first data is correctly received by the plurality of terminal devices;

if the network device receives NACK information aiming at the first data before the first timer is overtime, the network device retransmits the first data.
The method of any one of claims 16 to 19, wherein the first data is a transport block, TB.
A method of communication, the method comprising:

the method comprises the steps that terminal equipment receives first configuration information, wherein the first configuration information is used for determining a first feedback resource corresponding to an MBMS service;

and the terminal equipment sends NACK information on the first feedback resource.
The method of claim 21, wherein,

the first configuration information is used for determining a first PUCCH resource set, and the first PUCCH resource set is used for determining the first feedback resource; or,

the first configuration information is used to determine the first feedback resource.
The method of claim 21 or 22, wherein the first configuration information is carried in a first MCCH or in a first SIB.
The method of claim 23, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
A method of communication, the method comprising:

the method comprises the steps that terminal equipment receives first configuration information, wherein the first configuration information is used for determining a plurality of feedback resources corresponding to an MBMS service;

and the terminal equipment determines a first feedback resource from the plurality of feedback resources and sends feedback information on the first feedback resource.
The method of claim 25, wherein the first configuration information is used to determine a plurality of PUCCH resource sets, each PUCCH resource set of the plurality of PUCCH resource sets being used to determine one feedback resource.
The method of claim 26, wherein the plurality of PUCCH resource sets belong to a first configuration list comprising configuration information for N PUCCH resource sets, N being an integer greater than or equal to 16.
The method of claim 25, wherein the first configuration information is used to determine at least one PUCCH resource set, and for each of the at least one PUCCH resource set, the PUCCH resource set and member index numbers of a plurality of terminal devices are used to determine a plurality of feedback resources.
The method of claim 28, wherein the plurality of feedback resources and member index numbers of the plurality of terminal devices have a correspondence.
The method of any of claims 25-29, wherein the first configuration information is carried in a first MCCH or a first SIB.
The method of claim 30, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
An apparatus for feedback resource configuration, the apparatus comprising:

a sending unit, configured to send first configuration information, where the first configuration information is used to determine a first feedback resource corresponding to an MBMS service; and the first feedback resource is used for the terminal equipment to send NACK information aiming at the MBMS.
The apparatus of claim 32, wherein,

the first configuration information is used for determining a first PUCCH resource set, and the first PUCCH resource set is used for determining the first feedback resource; or,

the first configuration information is used to determine the first feedback resource.
The apparatus of claim 32 or 33, wherein the first configuration information is carried in a first MCCH or in a first SIB.
The apparatus of claim 34, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
The apparatus of claim 35, wherein the apparatus further comprises:

and the distribution unit is used for distributing a member index number for the terminal equipment registered to the MBMS service.
The apparatus of any one of claims 32 to 36, wherein the apparatus further comprises:

and the processing unit is used for retransmitting a service data packet corresponding to the NACK information if the NACK information is received on the first feedback resource, wherein the service data packet is a data packet of the MBMS service.
An apparatus for feedback resource configuration, the apparatus comprising:

a sending unit, configured to send first configuration information, where the first configuration information is used to determine multiple feedback resources corresponding to an MBMS service, and the multiple feedback resources are used for multiple terminal devices to send feedback information for the MBMS service.
The apparatus of claim 38, wherein the first configuration information is used to determine a plurality of PUCCH resource sets, each PUCCH resource set of the plurality of PUCCH resource sets being used to determine one feedback resource.
The apparatus of claim 39, wherein the plurality of PUCCH resource sets belong to a first configuration list comprising configuration information for N PUCCH resource sets, N being an integer greater than or equal to 16.
The apparatus of claim 38, wherein the first configuration information is used to determine at least one PUCCH resource set, and for each of the at least one PUCCH resource set, the PUCCH resource set and member index numbers of the plurality of terminal devices are used to determine a plurality of feedback resources.
The apparatus of any of claims 38-41, wherein the plurality of feedback resources and member index numbers of the plurality of terminal devices have a correspondence.
The apparatus of any one of claims 38-42, wherein the first configuration information is carried in a first MCCH or a first SIB.
The apparatus of claim 43, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
The apparatus of claim 44, wherein the apparatus further comprises:

and the distribution unit is used for distributing a member index number for the terminal equipment registered to the MBMS service.
The apparatus of any one of claims 38 to 45, wherein the apparatus further comprises:

a receiving unit, configured to receive, on the multiple feedback resources, ACK information and/or NACK information for the MBMS service sent by the multiple terminal devices.
The apparatus of claim 46, wherein the apparatus further comprises:

the processing unit is used for setting the first counter to 0 and starting the first timer after the first data is sent; the first data is the data of the MBMS service; after receiving ACK information aiming at the first data every time, controlling the first counter to increase by 1; if the value of the first counter is equal to a first threshold value and the first timer is in a running state, stopping the first timer and determining that the first data is correctly received by the plurality of terminal devices; and if the first timer is overtime, retransmitting the first data.
The apparatus of claim 47, wherein,

the first threshold is equal to the number of members in a multicast group corresponding to the MBMS service; or,

the first threshold is smaller than the number of members in the multicast group corresponding to the MBMS service.
The apparatus of claim 47 or 48, wherein the first threshold is configured in a first SIB or a first MCCH.
The apparatus of claim 46, wherein the apparatus further comprises:

the processing unit is used for starting a first timer after the first data is sent; the first data is the data of the MBMS service; if the NACK information aiming at the first data is not received before the first timer is overtime, the first data is determined to be correctly received by the plurality of terminal devices; and if the NACK information aiming at the first data is received before the first timer is overtime, retransmitting the first data.
The apparatus of any one of claims 47-50, wherein the first data is a TB.
A communications apparatus, the apparatus comprising:

a receiving unit, configured to receive first configuration information, where the first configuration information is used to determine a first feedback resource corresponding to an MBMS service;

a feedback unit, configured to send NACK information on the first feedback resource.
The apparatus of claim 52, wherein,

the first configuration information is used for determining a first PUCCH resource set, and the first PUCCH resource set is used for determining the first feedback resource; or,

the first configuration information is used to determine the first feedback resource.
The apparatus of claim 52 or 53, wherein the first configuration information is carried in a first MCCH or a first SIB.
The apparatus of claim 54, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
A communications apparatus, the apparatus comprising:

a receiving unit, configured to receive first configuration information, where the first configuration information is used to determine multiple feedback resources corresponding to an MBMS service;

a feedback unit, configured to determine a first feedback resource from the multiple feedback resources, and send feedback information on the first feedback resource.
The apparatus of claim 56, wherein the first configuration information is for determining a plurality of PUCCH resource sets, each PUCCH resource set of the plurality for determining one feedback resource.
The apparatus of claim 57, wherein the plurality of PUCCH resource sets belong to a first configuration list comprising configuration information for N PUCCH resource sets, N being an integer greater than or equal to 16.
The apparatus of claim 56, wherein the first configuration information is used to determine at least one PUCCH resource set, and for each of the at least one PUCCH resource set, member index numbers of the PUCCH resource set and a plurality of terminal devices are used to determine a plurality of feedback resources.
The apparatus of claim 59, wherein the plurality of feedback resources have a correspondence with member index numbers of the plurality of terminal devices.
The apparatus of any one of claims 56-60, wherein the first configuration information is carried in a first MCCH or a first SIB.
The apparatus of claim 61, wherein the first MCCH further carries at least one of:

first indication information, wherein the first indication information is used for indicating whether the MBMS needs HARQ feedback or not;

second indication information, wherein the second indication information is used for indicating the number of members in a multicast group corresponding to the MBMS service;

and the third indication information is used for indicating whether the terminal equipment needs to enter a connection state and then receiving the MBMS service.
A communication device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory, to perform the method of any of claims 1 to 20, or the method of any of claims 21 to 31.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any of claims 1 to 20, or the method of any of claims 21 to 31.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any of claims 1 to 20 or the method of any of claims 21 to 31.
A computer program product comprising computer program instructions to cause a computer to perform the method of any of claims 1 to 20, or the method of any of claims 21 to 31.
A computer program for causing a computer to perform the method of any one of claims 1 to 20, or the method of any one of claims 21 to 31.