阅读说明：本技术 下行数据接收方法、下行数据发送及设备 (Downlink data receiving method, downlink data sending method and device ) 是由 吴昱民 李娜 潘学明 于 2020-04-07 设计创作，主要内容包括：本发明实施例提供一种下行数据接收方法、下行数据发送方法及设备,该方法包括：获取MBS业务的HARQ进程；根据所述HARQ进程,接收MBS业务的下行数据。在本发明实施例中,可以将特定MBS业务通过对应的HARQ进程进行发送和重传,使得终端可以对网络侧多次重复发送的数据进行合并解码,提高解码成功率,从而提高了特定MBS业务的发送可靠性。(The embodiment of the invention provides a downlink data receiving method, a downlink data sending method and equipment, wherein the method comprises the following steps: acquiring an HARQ process of MBS service; and receiving the downlink data of the MBS service according to the HARQ process. In the embodiment of the invention, the specific MBS service can be transmitted and retransmitted through the corresponding HARQ process, so that the terminal can combine and decode the data repeatedly transmitted by the network side for many times, the decoding success rate is improved, and the transmission reliability of the specific MBS service is improved.)

1. A downlink data receiving method is applied to a terminal, and is characterized by comprising the following steps:

acquiring a hybrid automatic repeat request HARQ process of a broadcast multicast service MBS;

and receiving the downlink data of the MBS service according to the HARQ process.

2. The method of claim 1, further comprising:

and receiving indication information, wherein the indication information indicates that the terminal sends or does not send HARQ feedback information according to the downlink data receiving condition of the MBS service.

3. The method as claimed in claim 1, wherein the receiving downlink data of MBS service according to the HARQ process comprises:

acquiring the sending configuration of the downlink data of the MBS service;

and receiving the downlink data of the MBS service according to the HARQ process and the sending configuration.

4. The method of claim 3, wherein the configuration for transmitting the downlink data of the MBS service comprises:

one downlink data sending period of the MBS service comprises a plurality of sending positions.

5. The method of claim 4, wherein each of the plurality of transmission positions corresponds to a respective transmission of new data;

alternatively, the first and second electrodes may be,

each of the plurality of transmit positions corresponds to transmission of the same data.

6. The method of claim 5, wherein the HARQ transmission version for each transmission location is agreed by a protocol or configured by a network side.

7. The method of claim 3, wherein the configuration for transmitting the downlink data of the MBS service comprises: and a retransmission mode of an HARQ process of the MBS service.

8. The method of claim 7, wherein the retransmission scheme comprises any one of:

retransmitting the MBS service or the unicast service in a corresponding scheduling transmission mode;

and retransmitting the data through other scheduling transmission modes different from the MBS service initial transmission scheduling transmission mode.

9. The method of claim 8, wherein the scheduled transmission mode corresponding to the MBS service includes at least one of the following:

the MBS service dynamically schedules a sending mode;

the MBS service semi-persistent scheduling sending mode;

the scheduling transmission mode corresponding to the unicast service comprises at least one of the following modes:

the unicast service dynamically schedules a sending mode;

and the unicast service semi-persistent scheduling sending mode.

10. The method of claim 8, wherein in case of the other scheduling transmission mode different from the MBS service initial transmission scheduling transmission mode, the identifier of the scheduling transmission mode corresponding to the retransmission is indicated by a network side.

11. The method of claim 1, wherein receiving downlink data of MBS service comprises:

and receiving the downlink data of the MBS service according to a downlink data receiving rule.

12. The method of claim 11, wherein the downlink data receiving rule comprises one or more of the following:

scheduling the priority corresponding to the sending mode;

the priority corresponding to the logical channel;

and the service identifier corresponds to the priority.

13. The method of claim 11, wherein the downlink data receiving rule is determined by a network side configuration, a protocol agreement, or the terminal.

14. The method as claimed in claim 1, wherein the acquiring HARQ process of MBS service comprises:

acquiring HARQ configuration information corresponding to MBS service receiving, wherein the HARQ configuration information comprises one or more of the following items:

the number of HARQ processes available for the MBS service;

and the number of the HARQ process available for the MBS service.

15. The method as claimed in claim 14, wherein the configuration of MBS available HARQ process numbers includes any one of:

starting the HARQ process number and the number of available HARQ processes;

ending the HARQ process number and the number of available HARQ processes; explicitly indicated HARQ process number;

a starting HARQ process number and an ending HARQ process number.

16. The method of claim 14, wherein the starting HARQ process number and the ending HARQ process number are configured by a network side or agreed upon by a protocol.

17. The method of claim 14, wherein the HARQ configuration information of the MBS service comprises any one of the following:

HARQ configuration information of a specific MBS service;

HARQ configuration information of MBS service corresponding to a specific cell;

HARQ configuration information of MBS service corresponding to a specific transmission node;

HARQ configuration information of MBS service corresponding to specific frequency range.

18. The method of claim 14, wherein the HARQ configuration information has a corresponding relationship with one or more MBS services, and wherein the corresponding relationship is configured by a network side or agreed by a protocol.

19. The method of claim 14, wherein the HARQ process pool to which the HARQ process available for the MBS service belongs is the same as the HARQ process pool to which the HARQ process available for the unicast service belongs;

alternatively, the first and second electrodes may be,

the HARQ process pool to which the HARQ process available for the MBS service belongs is different from the HARQ process pool to which the HARQ process available for the unicast service belongs.

20. The method of claim 19, wherein in case that the HARQ process pool to which the HARQ process available for the MBS service belongs is the same as the HARQ process pool to which the HARQ process available for the unicast service belongs, the HARQ process available for the MBS service cannot be used for initial transmission of the unicast service.

21. A method for sending downlink data is applied to network equipment, and is characterized by comprising the following steps:

acquiring an HARQ process of MBS service;

and sending the downlink data of the MBS service according to the HARQ process.

22. The method of claim 21, further comprising:

and sending indication information, wherein the indication information indicates that the terminal sends or does not send HARQ feedback information according to the downlink data receiving condition of the MBS service.

23. The method as claimed in claim 21, wherein the sending downlink data of MBS service according to the HARQ process comprises:

acquiring the sending configuration of the downlink data of the MBS service;

and sending the downlink data of the MBS service according to the HARQ process and the sending configuration.

24. A terminal, comprising:

the first acquisition module is used for acquiring the HARQ process of the MBS service;

and the first receiving module is used for receiving the downlink data of the MBS service according to the HARQ process.

25. A network device, comprising:

the second acquisition module is used for acquiring the HARQ process of the MBS service;

and the first sending module is used for sending the downlink data of the MBS service according to the HARQ process.

26. A communication device, comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program when executed by the processor implementing the steps of the downlink data receiving method according to any one of claims 1 to 20; or, the steps of the downlink data transmitting method according to any of claims 21 to 23.

27. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, realizes the steps of the downlink data receiving method according to any one of claims 1 to 20; or, the steps of the downlink data transmitting method according to any of claims 21 to 23.

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a downlink data receiving method, a downlink data sending method and equipment.

Background

In the existing Long Term Evolution (LTE) technology, a Multicast and Broadcast Service (MBS) Service only supports 1 transmission, and therefore does not support Hybrid Automatic Repeat Request (HARQ) transmission, so that when the MBS Service is repeatedly transmitted, data repeatedly transmitted many times cannot be combined and decoded, the decoding success rate is reduced, and the packet loss rate is increased.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a downlink data receiving method, a downlink data sending method, and a device, which solve the problem that MBS service does not support HARQ transmission.

In a first aspect, an embodiment of the present invention provides a downlink data receiving method, applied to a terminal, including:

acquiring a hybrid automatic repeat request HARQ process of a broadcast multicast service MBS;

and receiving the downlink data of the MBS service according to the HARQ process.

In a second aspect, an embodiment of the present invention further provides a method for sending downlink data, which is applied to a network device, and includes:

acquiring an HARQ process of MBS service;

and sending the downlink data of the MBS service according to the HARQ process.

In a third aspect, an embodiment of the present invention further provides a terminal, including:

the first acquisition module is used for acquiring the HARQ process of the MBS service;

and the first receiving module is used for receiving the downlink data of the MBS service according to the HARQ process.

In a fourth aspect, an embodiment of the present invention further provides a network device, including:

the second acquisition module is used for acquiring the HARQ process of the MBS service;

and the first sending module is used for sending the downlink data of the MBS service according to the HARQ process.

In a fifth aspect, an embodiment of the present invention further provides a communication device, including: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the downlink data receiving method according to the first aspect; or, the step of the downlink data transmission method according to the second aspect.

In a sixth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements the steps of the downlink data receiving method according to the first aspect; or, the step of the downlink data transmission method according to the second aspect.

In the embodiment of the invention, the specific MBS service can be transmitted and retransmitted through the corresponding HARQ process, so that the terminal can combine and decode the data repeatedly transmitted by the network side for many times, the decoding success rate is improved, and the transmission reliability of the specific MBS service is improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings.

In the drawings:

FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;

fig. 2 is a flowchart of a downlink data receiving method according to an embodiment of the present invention;

fig. 3 is a flowchart of a downlink data transmission method according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a terminal according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a network device according to an embodiment of the invention;

fig. 6 is a schematic diagram of a communication device according to an embodiment of the present invention.

Detailed Description

To facilitate understanding of the embodiments of the present invention, the following two technical points are described below:

(1) multimedia Broadcast Multicast Service (MBMS) or Broadcast Multicast Service (MBS) profile:

in the LTE system, the MBMS service may be transmitted in the following two ways:

MBMS/MBS transmission mode 1: the MBMS service is transmitted through a Physical Multicast Channel (PMCH) Physical Channel in an MBMS Single Frequency Network (MBSFN) subframe. Here, the Control information is transmitted through system information (for example, SIB13) and an MCCH (broadcast Control Channel), and the data is transmitted through an MTCH (broadcast Traffic Channel).

MBMS/MBS transmission mode 2: a Physical Downlink Control Channel (PDSCH) Channel scheduled by a PDCCH (Physical Downlink Control Channel). The Control information is transmitted through system information (e.g., SIB20) and a Single Cell Multicast Control Channel (SC-MCCH), and the data is transmitted through a Single Cell Multicast Traffic Channel (SC-MTCH). The SC-MCCH is transmitted through a PDSCH scheduled by a Single Cell Radio Network Temporary Identity (SC-RNTI) PDCCH, and the SC-MTCH is transmitted through a PDSCH scheduled by G-RNTI PDCCH.

(2) Bandwidth Part (BWP) profile:

for a specific cell, the network side can configure up to four BWPs, corresponding to different operating frequency information. The network side may indicate the activated BWP through Downlink Control Information (DCI) signaling. For a particular cell, the terminal can only have one active BWP at a time.

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

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various 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" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.

Embodiments of the present invention are described below with reference to the accompanying drawings. The downlink data receiving method, the downlink data sending method and the device provided by the embodiment of the invention can be applied to a wireless communication system. Referring to fig. 1, an architecture diagram of a wireless communication system according to an embodiment of the present invention is shown. As shown in fig. 1, the wireless communication system may include: network device 10, network device 11, and terminal 12, terminal 12 may be referred to as UE12, and terminal 12 may communicate (transmit signaling or transmit data) with network device 10 and network device 11. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.

The network device 10 and the network device 11 provided in the embodiment of the present invention may be base stations, which may be commonly used base stations, evolved node base stations (enbs), or network devices in a 5G system (for example, next generation base stations (gnbs) or Transmission and Reception Points (TRPs)).

The terminal 12 provided in the embodiment of the present invention may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device.

Referring to fig. 2, an embodiment of the present invention provides a downlink data receiving method, where an execution main body of the method may be a terminal, and the method includes: step 201 and step 202.

Step 201: acquiring an HARQ process of MBS service;

it can be understood that the MBS service refers to a partial MBS service or a specific MBS service, that is, the HARQ process may be used for transmission of the partial or specific MBS service, for example, the MBS service corresponding to a specific cell, the MBS service corresponding to a specific transmission node, or the MBS service within a specific frequency range, etc.

Step 202: and receiving the downlink data of the MBS service according to the HARQ process.

Illustratively, when the network side retransmits the transmission of the downlink data of the MBS service, the UE combines and decodes the retransmitted data of the MBS service and the data that was received before the MBS service according to the HARQ process. For example, the G-RNTI-1PDCCH schedules the initial transmission of HARQ-1, the C-RNTI PDCCH schedules the retransmission of HARQ-1, and the UE combines and decodes the initial transmission data and the retransmission data.

In the embodiment of the invention, part or specific MBS service can be received through a specific HARQ process, so that the terminal can carry out combined decoding on data repeatedly sent by a network side for many times, the decoding success rate is improved, and the sending reliability of the part or specific MBS service is improved.

In some embodiments, the method further comprises: and receiving indication information, wherein the indication information indicates that the terminal sends or does not send HARQ feedback information according to the downlink data receiving condition of the MBS service.

In some embodiments, in step 202, the sending configuration of the downlink data of the MBS service is obtained; and receiving the downlink data of the MBS service according to the HARQ process and the sending configuration.

Optionally, the sending configuration of the downlink data of the MBS service includes: one downlink data sending period of the MBS service comprises a plurality of sending positions.

For example, each of the plurality of transmission positions corresponds to a respective transmission of new data; alternatively, each of the plurality of transmission positions corresponds to transmission of the same data.

Optionally, the HARQ transmission version of each transmission position is agreed by a protocol or configured by the network side, for example, when each transmission position of the plurality of transmission positions corresponds to transmission of the same data, the HARQ transmission versions of the plurality of transmission positions are the same or different.

In the embodiment of the present invention, the sending configuration of the downlink data of the MBS service includes: and the retransmission mode of the HARQ process of the MBS service or the unicast service.

Optionally, the retransmission method of the HARQ process includes any one of:

(1) retransmitting the MBS service or the unicast service in a corresponding scheduling transmission mode;

(2) and retransmitting the data through other scheduling transmission modes different from the MBS service initial transmission scheduling transmission mode.

For example, MBS is sent by "multicast scheduling transmission" initially, and MBS is sent by "unicast scheduling transmission" all using the same HARQ process, but the "scheduling transmission" is different.

Optionally, the scheduling transmission mode corresponding to the MBS or unicast service includes at least one of the following:

(1) the MBS service dynamically schedules a sending mode;

(2) the unicast service dynamically schedules a sending mode;

(3) the MBS service semi-persistent scheduling sending mode;

(4) and the unicast service semi-persistent scheduling sending mode.

Optionally, in the case of other scheduling transmission modes different from the MBS service initial transmission scheduling transmission mode, the identifier of the scheduling transmission mode corresponding to the retransmission is indicated by the network side.

In some embodiments, in step 202, receiving downlink data of the MBS service includes:

and receiving the downlink data of the MBS service according to the downlink data receiving rule.

Optionally, the downlink data receiving rule includes one or more of the following:

(1) scheduling the priority corresponding to the sending mode;

the priority corresponding to the scheduling transmission mode corresponding to the unicast service is higher than the priority corresponding to the scheduling transmission mode corresponding to the multicast service.

(2) The priority corresponding to the logical channel;

for example, if the logical channel priority of the unicast service is higher than the logical channel priority of the multicast service, the UE preferentially receives the multicast service, and if the logical channel priority of the multicast service-1 is higher than the logical channel priority of the multicast service-2, the UE preferentially receives the multicast service-1.

(3) And the service identifier corresponds to the priority.

Optionally, the service identifier includes at least one of: the identity of a specific MBS service and the identity of a unicast service.

Optionally, the downlink data receiving rule is configured by a network side, agreed by a protocol, or determined by the terminal.

For example, the terminal determines the downlink data reception rule according to the reception interest of the service, and illustratively, the UE has a higher reception interest for the TMGI-1 service than for the TMGI-2 service. Or, the UE has a higher receiving interest for MBS service than unicast service.

In some embodiments, in step 201, the acquiring the HARQ process of the MBS service includes:

acquiring HARQ configuration information corresponding to MBS service receiving, wherein the HARQ configuration information comprises one or more of the following items:

(1) the number of HARQ processes available for MBS service;

optionally, the configuration manner of the MBS available HARQ process number includes any one of: starting the HARQ process number and the number of available HARQ processes; ending the HARQ process number and the number of available HARQ processes; explicitly indicated HARQ process number; a starting HARQ process number and an ending HARQ process number.

It can be understood that the HARQ configuration information may be used for partial or specific MBS services.

Optionally, the starting HARQ process number and the ending HARQ process number are configured by the network side or agreed by a protocol.

(2) The number of the HARQ process available for the MBS service.

In some embodiments, the HARQ configuration information of the MBS service includes any one of the following:

(1) HARQ configuration information of a specific MBS service;

it can be understood that HARQ configuration information of each MBS service may be independent.

(2) HARQ configuration information of MBS service corresponding to a specific cell;

(3) HARQ configuration information of MBS service corresponding to a specific transmission node;

(4) HARQ configuration information of MBS service corresponding to specific frequency range.

Optionally, the HARQ configuration information has a corresponding relationship with one or more MBS services, where the corresponding relationship is configured by a network side or agreed by a protocol.

In some embodiments, the HARQ process pool to which the HARQ process available for the MBS service belongs is the same as the HARQ process pool to which the HARQ process available for the unicast service belongs;

further, the HARQ process available for the MBS service cannot be used for initial transmission of a unicast service.

In other embodiments, the HARQ process pool to which the HARQ process available for the MBS service belongs is different from the HARQ process pool to which the HARQ process available for the unicast service belongs.

In the embodiment of the invention, the MBS service can be sent and retransmitted through a specific HARQ process, thereby improving the sending reliability of the MBS service.

Referring to fig. 3, an embodiment of the present invention further provides a method for sending downlink data, where an execution subject of the method is a network device, and the method specifically includes: step 301 and step 302.

Step 301: acquiring an HARQ process of MBS service;

it can be understood that the MBS service refers to a partial MBS service or a specific MBS service, i.e., HARQ processes may be used for the partial or specific MBS service.

Step 302: and sending the downlink data of the MBS service according to the HARQ process.

Optionally, acquiring a sending configuration of downlink data of the MBS service; and sending the downlink data of the MBS service according to the HARQ process and the sending configuration.

In some embodiments, the method further comprises: and sending indication information, wherein the indication information indicates that the terminal sends or does not send HARQ feedback information according to the downlink data receiving condition of the MBS service.

In the embodiment of the invention, the MBS service can be sent and retransmitted through a specific HARQ process, thereby improving the sending reliability of the MBS service.

To facilitate an understanding of embodiments of the present invention, reference is made to the following examples.

Step 1: the network side configures or protocols to agree the MBS service to receive the corresponding HARQ configuration information.

Step 2: and according to the HARQ configuration information, the UE receives the downlink data of the corresponding MBS service and sends corresponding feedback information.

Optionally, the "MBS service receives corresponding HARQ configuration information" may indicate whether indication information of HARQ feedback needs to be sent.

For example, the network indicates that the UE needs to send HARQ feedback information for receiving the PDSCH corresponding to MBS service-1.

Optionally, the configuration mode of the "HARQ configuration information" includes any one of the following:

(1) receiving corresponding HARQ configuration information by MBS service corresponding to a specific cell;

for example, the MBS service corresponding to cell-1 receives the corresponding HARQ configuration information.

(2) Receiving corresponding HARQ configuration information by the MBS service corresponding to the specific transmission node;

for example, the MBS service corresponding to the transmission node-1 receives the corresponding HARQ configuration information.

(3) Receiving corresponding HARQ configuration information by the MBS service corresponding to the specific frequency range;

for example, the MBS service corresponding to BWP-1 receives the corresponding HARQ configuration information.

Additionally, for the MBS corresponding to a specific cell (or a specific transmission node; or a specific frequency range), the network side configures or protocols to agree one or more MBS services to receive the corresponding HARQ configuration information corresponding to the MBS.

For example, the MBS corresponding to the Temporary Mobile Group Identity (TMGI) -1 receives the corresponding HARQ configuration information.

Wherein the "identification of a specific cell" includes any combination of one or more of:

(1) cell group identification;

for example, a Master Cell Group (MCG) or a Secondary Cell Group (SCG) identifier.

(2) A cell type identifier;

such as a Primary Cell (PCell), a Secondary Cell (SCell), a Primary Secondary Cell (PSCell), or a special Cell (SCell).

(3) A Serving cell (Serving cell) identity;

such as Serving cell-1.

(4) A secondary cell identity;

such as SCell-1.

(5) Physical Cell Identity (PCI);

such as PCI-1.

Wherein the "identification of a specific transmission node" includes any combination of one or more of:

(1) a Transmission node (TRP) identity;

such as TRP-1.

(2) A physical cell identity;

such as PCI-1.

(3) A reference signal identification;

such as a Synchronization Signal Block (SSB) -1, and/or a Channel State Information-Reference Signal (CSI-RS) -1.

(4) Port number identification corresponding to the reference signal;

such as port _ 1.

(5) Resource location identification of the control channel;

for example, a Control Resource Set (core Set) identifier of a Physical Downlink Control Channel (PDCCH), and/or a search space (search space) identifier.

(6) A reference signal identification of a control channel;

such as an SSB identity, and/or a CSI-RS identity.

(7) Port number identification corresponding to a reference signal of a control channel;

such as port _ 1.

Wherein the "identification of a specific frequency range" comprises any combination of one or more of:

(1) bandwidth part (BWP) identification;

such as BWP-1.

(2) Frequency points;

for example, Absolute Radio Frequency Channel Number (ARFCN) -1.

(3) A bandwidth;

such as 20 MHz.

(4) A frequency start position;

such as an absolute radio frequency channel number start position (ARFCN-start).

(5) A frequency end position;

such as the absolute radio frequency channel number end position (ARFCN-end).

(6) Physical Resource Block (PRB) identification;

such as PRB-1.

(7) Physical resource block number identification;

for example, 10 PRBs.

Wherein, the "identification of the specific MBS service" includes any combination of one or more of the following items:

(1) MBS service information identification;

such as TMGI-1.

(2) MBS service logic channel identification;

for example, Multicast Traffic Channel (MTCH) -1.

(3) MBS carries over the identification;

for example, Data Radio Bearer (DRB) -1 or MBMS Point-to-Multipoint Radio Bearer (MRB) -1.

(4) MBS data stream identification;

for example, Quality of Service (QoS) flow (flow) -1.

(5) MBS conversation identification;

for example, PDU Session-1.

(6) MBS service area identification;

for example, Service Area Identity (SAI);

(7) MBS service sends the area label;

for example, MBSFN-1, a cell list for transmitting MBS service, and an empty port for transmitting a zone identifier (e.g., MBS area 1) of MBS service.

(8) Scheduling information identification of MBS service;

for example, a cluster group Radio Network Temporary Identifier (G-RNTI) -1, and an MBS service TMGI-1 is sent by the UE through the PDSCH scheduled by the PDCCH identified by the G-RNTI-1.

(9) The data channel identification of MBS service;

for example, configuration 1 of the Semi-Persistent PDSCH, MBS service TMGI-1 is transmitted through Semi-Persistent Scheduling (SPS).

Wherein the "HARQ configuration information" includes any combination of one or more of the following:

(1) the number of HARQ processes available for MBS;

for example, 4 HARQ processes.

(2) The number of the HARQ process available for the MBS;

such as HARQ processes numbered 0-3.

Wherein, the relationship between the HARQ process available for MBS and the HARQ process available for unicast service includes any one of the following:

relation 1: the "MBS-available HARQ process" shares the same pool of HARQ processes as the "unicast traffic-available HARQ process".

For example, the total HARQ process number of the UE is "0-15" (16 in total), "MBS-available HARQ processes" is "0-7," and "unicast service-available HARQ processes" is "8-15.

Additionally, for relation 1, the network side configuration or protocol convention, the HARQ process of the MBS cannot be used for the initial transmission of the unicast service. For example, for new data transmission of a unicast service PDSCH scheduled by a Cell Radio Network Temporary Identifier (C-RNTI) PDCCH, the HARQ process of the MBS cannot be used.

Relation 2: the HARQ process available for MBS and the HARQ process available for unicast service adopt independent HARQ process pools.

For example, the MBS service of the UE has 8 HARQ processes dedicated for MBS (e.g., HARQ process numbers "0-7"), and for the unicast service, there are 16 HARQ processes dedicated for unicast (e.g., HARQ process numbers "0-15").

Wherein, the "identifier of unicast service" corresponding to the "HARQ process available for unicast service" includes at least one of the following:

(1) the scheduling information identification of the unicast service;

for example, a Cell Radio Network Temporary Identity (C-RNTI) -1, that is, a unicast service DRB-1 transmitted by the PDSCH scheduled by the UE through the PDCCH identified by the C-RNTI-1.

(2) Data channel identification of unicast service;

for example, configuration 1 of semi-persistent PDSCH transmits unicast service DRB-1 through downlink SPS.

(3) Unicast service bearing type identification;

such as DRB-1.

(4) Unicast service logic channel identification;

such as DTCH-1.

(5) Unicast bearing identification;

such as DRB-1.

(6) Unicast data stream identification;

such as QoS flow-1.

(7) A unicast session identifier;

for example, PDU Session-1.

The configuration method of the MBS available HARQ process number includes any one of the following:

(1) starting the HARQ process number and the number of available HARQ processes;

for example, if the total number of HARQ processes is 16, "starting HARQ process" is 5, "the number of available HARQ processes" is 5, and the "MBS available HARQ process number" is "5-9".

(2) Explicitly indicated HARQ process number;

for example, the available HARQ processes are 4 HARQ processes of "0, 2, 4, 6".

(3) Starting HARQ process number and ending HARQ process number;

for example, if the total number of HARQ processes is 16, the "starting HARQ process" is 5, and the number of the ending HARQ process is 9, the "MBS available HARQ process number" is 5-9, and there are 5 HARQ processes.

Wherein, the "starting HARQ process number" or "ending HARQ process number" is the network configuration or protocol convention. For example, the protocol convention starts with number "0", or the network configuration starts with number "5".

Additionally, the number of the HARQ process corresponds to a specific time location when the MBS service is transmitted through a semi-persistent data channel.

For example, the "initial HARQ process" is 5, the "Number of available HARQ processes" is 5, the HARQ process corresponding to the semi-persistent PDSCH (e.g., SPS PDSCH) having the System Frame Number (SFN) of 1 and the Slot Number (Slot) of 1 is 5, and the HARQ process corresponding to the next semi-persistent PDSCH is 6.

Additionally, when the MBS service is transmitted through a semi-persistent data channel, the network side configuration or protocol stipulates that there may be multiple transmission positions in one data transmission period.

For example, the period for configuring MBS service to transmit through the semi-persistent data channel by the network side is 10 milliseconds (ms), and each period has 2 transmission positions.

The network side configures or agrees to the sending mode of the 'multiple sending position in one data sending period' to include any one of the following modes:

(1) each sending position corresponds to the transmission of respective new data;

for example, the period for configuring MBS service to transmit through the semi-persistent data channel by the network side is 10ms, and each period has 2 transmission positions. The sending position 1 sends new data by using the HARQ process 1, and the sending position 2 sends new data by using the HARQ process 2.

(2) Each sending position corresponds to the transmission of the same data (including new transmission and retransmission);

for example, the period of MBS service transmission through the semi-persistent data channel configured by the network side is 10ms, each period has 2 transmission positions, the transmission position 1 transmits new data by using the HARQ process 1, and the transmission position 2 transmits retransmission data by using the HARQ process 1.

When the multiple transmission positions in the period of one data transmission adopt the transmission of the same data corresponding to each transmission position, the network side configures or protocols to agree the HARQ transmission versions of the multiple transmission positions.

For example, the period for configuring MBS service to transmit through the semi-persistent data channel by the network side is 10ms, and each period has 2 transmission positions. The transmission position 1 uses the HARQ process 1 to transmit a Redundancy Version (RV) of new data to be 0, and the transmission position 2 uses the HARQ process 1 to transmit an RV of retransmission data to be 2.

Additionally, the network side configures or agrees to make a retransmission mode of the HARQ process of the specific service include any one of the following:

(1) and retransmitting the data in a scheduling transmission mode corresponding to the specific service.

For example, the HARQ process-1 of the MBS service is retransmitted through the PDSCH scheduled by the G-RNTI-1PDCCH after the initial transmission of the HARQ process-1 of the MBS service is performed through the G-RNTI-1 PDCCH;

for another example, the HARQ process-1 of MBS service transmitted through MBS semi-persistent PDSCH is initially retransmitted through PDSCH scheduled by G-RNTI-1PDCCH or retransmitted through MBS semi-persistent PDSCH.

(2) And retransmitting the data in a scheduling transmission mode of different services.

For example, the HARQ process-1 of the MBS service is retransmitted through the initial transmission of the HARQ process-1 of the MBS service scheduled by the G-RNTI-1PDCCH and the PDSCH scheduled by the C-RNTI-1 PDCCH.

For another example, the initial transmission of HARQ process-1 of MBS traffic transmitted via MBS semi-persistent PDSCH is retransmitted via PDSCH scheduled by C-RNTI-1PDCCH or retransmitted via unicast semi-persistent PDSCH.

Wherein, the scheduling transmission mode corresponding to the specific service includes at least one of the following:

(1) sending a specific MBS service dynamic scheduling;

for example, MBS service-1 is transmitted through PDSCH scheduled by G-RNTI-1 PDCCH.

(2) Sending a specific unicast service dynamic scheduling;

for example, the unicast traffic is transmitted through the C-RNTI or the PDSCH scheduled by the PDCCH Configured Scheduling RNTI (CS-RNTI).

(3) Transmitting the special MBS semi-persistent scheduling;

for example, MBS service-1 is transmitted through PDSCH of SPS-1.

(4) Transmitting the specific unicast service in a semi-persistent scheduling mode;

for example, unicast traffic is transmitted via the PDSCH of SPS-2.

Additionally, for the "retransmission is performed by scheduling transmission of different services", the network side indicates the service identifier corresponding to the retransmission. Wherein, the service identification includes any one of the following items:

(1) 'identification of specific MBS service'

(2) "identification of unicast traffic".

The scenario of "indicating the service identifier corresponding to the retransmission" may be defined as: the unicast service allows the HARQ process of the MBS to be used for initial transmission of the unicast service.

Optionally, when the network side retransmits the transmission of the downlink data of the MBS, the UE combines and decodes the retransmitted data of the MBS service and the data that has received the MBS service before, according to the retransmission indication information of the network side.

For example, the G-RNTI-1PDCCH schedules the initial transmission of HARQ-1, the C-RNTI PDCCH schedules the retransmission of HARQ-1, and the UE combines and decodes the initial transmission data and the retransmission data.

Additionally, if the UE cannot simultaneously receive downlink data of an MBS (e.g., PDSCH scheduled by G-RNTI-1 PDCCH) and unicast downlink data (e.g., PDSCH scheduled by C-RNTI PDCCH), or cannot simultaneously receive downlink data of multiple MBS (e.g., PDSCH scheduled by G-RNTI-1PDCCH and PDSCH scheduled by G-RNTI-2 PDCCH), the UE selects to receive corresponding downlink data according to the following downlink data reception rules:

rule 1: receiving downlink data according to a priority sequence configured by a network or agreed by a protocol;

rule 2: receiving downlink data according to the priority sequence indicated by the UE;

rule 3: receiving downlink data according to the priority sequence of the interest of the UE in receiving the service;

for example, the UE has a higher interest in receiving TMGI-1 service than TMGI-2 service; or, the UE has a higher receiving interest for MBS service than unicast service.

Wherein, for rule 1, the priority order includes any one of:

(1) the unicast service scheduling transmission mode (or multicast service scheduling transmission mode) is prior;

for example, C-RNTI PDCCH scheduled PDSCH takes precedence over G-RNTI PDCCH scheduled PDSCH.

(2) The order of logical channel priority is used to determine the priority order of reception.

For example, if the priority of the unicast logical channel is higher than that of the multicast logical channel, the UE preferentially receives the multicast; or, for example, if the logical channel priority of the multicast service-1 is higher than the logical channel priority of the multicast service-2, the UE preferentially receives the multicast service-1.

For rule 2, the "UE-indicated priority order" information includes any one of:

(1) the unicast service scheduling transmission mode (or multicast service scheduling transmission mode) is prior;

for example, C-RNTI PDCCH scheduled PDSCH takes precedence over G-RNTI PDCCH scheduled PDSCH.

(2) The priority order corresponding to the indicated service identifier;

for example, logical channel 1 has a higher priority than logical channel 2; as another example, TMGI-1 has a higher priority than TMGI-2.

Wherein, the service identification comprises at least one of the following:

(1) "identification of specific MBS service";

(2) "identification of unicast traffic".

In the embodiment of the invention, the MBS service can be sent and retransmitted through a specific HARQ process, thereby improving the sending reliability of the MBS service.

Referring to fig. 4, an embodiment of the present invention further provides a terminal, where the terminal 400 includes:

a first obtaining module 401, configured to obtain an HARQ process of an MBS service;

a first receiving module 402, configured to receive downlink data of the MBS service according to the HARQ process.

In some embodiments, the terminal 400 further comprises: and the second receiving module is used for receiving indication information, and the indication information indicates that the terminal sends or does not send HARQ feedback information according to the downlink data receiving condition of the MBS service.

In some embodiments, the first receiving module 402 is further configured to: acquiring the sending configuration of the downlink data of the MBS service; and receiving the downlink data of the MBS service according to the HARQ process and the sending configuration.

In some embodiments, the sending configuration of the downlink data of the MBS service includes:

one downlink data sending period of the MBS service comprises a plurality of sending positions.

In some embodiments, each of the plurality of transmission positions corresponds to a respective transmission of new data; alternatively, each of the plurality of transmission positions corresponds to transmission of the same data.

In some embodiments, the HARQ transmission version of each transmission position is agreed by a protocol or configured by a network side, for example, when each of the plurality of transmission positions corresponds to transmission of the same data, the HARQ transmission versions of the plurality of transmission positions are the same or different.

In some embodiments, the sending configuration of the downlink data of the MBS service includes: and a retransmission mode of an HARQ process of the MBS service.

In some embodiments, the retransmission scheme comprises any one of:

(1) retransmitting the MBS service or the unicast service in a corresponding scheduling transmission mode;

(2) and retransmitting the data through other scheduling transmission modes different from the MBS service initial transmission scheduling transmission mode.

In some embodiments, the scheduling transmission mode corresponding to the MBS service includes at least one of the following:

(1) the MBS service dynamically schedules a sending mode;

(2) the MBS service semi-persistent scheduling sending mode;

the scheduling transmission mode corresponding to the unicast service comprises at least one of the following modes:

(1) the unicast service dynamically schedules a sending mode;

(2) and the unicast service semi-persistent scheduling sending mode.

In some embodiments, in the case of the other scheduling transmission mode different from the MBS service initial transmission scheduling transmission mode, the identifier of the scheduling transmission mode corresponding to the retransmission is indicated by a network side.

In some embodiments, receiving downlink data of the MBS service includes:

and receiving the downlink data of the MBS service according to a downlink data receiving rule.

In some embodiments, the downlink data reception rules include one or more of:

(1) scheduling the priority corresponding to the sending mode;

(2) the priority corresponding to the logical channel;

(3) and the service identifier corresponds to the priority.

In some embodiments, the downlink data receiving rule is determined by a network side configuration, a protocol agreement, or the terminal.

In some embodiments, the acquiring the HARQ process of the MBS service includes:

acquiring HARQ configuration information corresponding to MBS service receiving, wherein the HARQ configuration information comprises one or more of the following items:

(1) the number of HARQ processes available for the MBS service;

(2) and the number of the HARQ process available for the MBS service.

In some embodiments, the configuration of the MBS available HARQ process number includes any one of:

(1) starting the HARQ process number and the number of available HARQ processes;

(2) ending the HARQ process number and the number of available HARQ processes; explicitly indicated HARQ process number;

(3) a starting HARQ process number and an ending HARQ process number.

In some embodiments, the starting HARQ process number and the ending HARQ process number are configured by the network side or agreed by the protocol.

In some embodiments, the HARQ configuration information of the MBS service includes any one of the following:

(1) HARQ configuration information of a specific MBS service;

(2) HARQ configuration information of MBS service corresponding to a specific cell;

(3) HARQ configuration information of MBS service corresponding to a specific transmission node;

(4) HARQ configuration information of MBS service corresponding to specific frequency range.

In some embodiments, the HARQ configuration information has a corresponding relationship with one or more MBS services, and the corresponding relationship is configured by the network side or agreed by a protocol.

In some embodiments, the HARQ process pool to which the HARQ process available for the MBS service belongs is the same as the HARQ process pool to which the HARQ process available for the unicast service belongs;

alternatively, the first and second electrodes may be,

the HARQ process pool to which the HARQ process available for the MBS service belongs is different from the HARQ process pool to which the HARQ process available for the unicast service belongs.

In some embodiments, in the case that the HARQ process pool to which the HARQ process available for the MBS service belongs is the same as the HARQ process pool to which the HARQ process available for the unicast service belongs, the HARQ process available for the MBS service cannot be used for initial transmission of the unicast service.

The terminal provided in the embodiment of the present invention may execute the method embodiment shown in fig. 2, which has similar implementation principles and technical effects, and this embodiment is not described herein again.

Referring to fig. 5, an embodiment of the present invention further provides a network device, where the network device 500 includes:

a second obtaining module 501, configured to obtain an HARQ process of an MBS service;

a first sending module 502, configured to send downlink data of the MBS service according to the HARQ process.

In some embodiments, the network device 500 further comprises:

and the second sending module is used for sending indication information which indicates the terminal to send or not send the HARQ feedback information according to the downlink data receiving condition of the MBS service.

In some embodiments, the first sending module 501 is further configured to: acquiring the sending configuration of the downlink data of the MBS service; and sending the downlink data of the MBS service according to the HARQ process and the sending configuration.

The network device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 3, which has similar implementation principles and technical effects, and this embodiment is not described herein again.

Referring to fig. 6, fig. 6 is a structural diagram of a communication device applied in the embodiment of the present invention, and as shown in fig. 6, the communication device 600 includes: a processor 601, a transceiver 602, a memory 603, and a bus interface, wherein:

in one embodiment of the present invention, the communication device 600 further comprises: a computer program stored in the memory 603 and executable on the processor 601, the computer program implementing the steps in the embodiments shown in fig. 2 or fig. 3 when executed by the processor 601.

In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 601 and various circuits of memory represented by memory 603 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium, it being understood that the transceiver 602 is an optional component.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.

The communication device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 2 or fig. 3, which implements similar principles and technical effects, and this embodiment is not described herein again.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read-Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable hard disk, a compact disc Read Only Memory (cd-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

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

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

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

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

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