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MBS (Multicast Broadcast Service) transmission method, terminal and network equipment

A technology of multicast broadcasting service and network equipment, applied in the field of MBS transmission method of multicast broadcasting service, terminal and network equipment, can solve the problems that the reliability of MBS service transmission cannot be guaranteed, the terminal cannot provide effective feedback, etc., and achieve reliable transmission. The effect of sexual security

Active Publication Date: 2022-02-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a multicast broadcast service MBS transmission method, a terminal and a network device, which solves the problem that the terminal cannot perform effective feedback and requires the network device to retransmit when the current network device transmits the multicast broadcast data packet to the terminal, resulting in MBS service The problem that the transmission reliability cannot be guaranteed

Method used

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  • MBS (Multicast Broadcast Service) transmission method, terminal and network equipment
  • MBS (Multicast Broadcast Service) transmission method, terminal and network equipment
  • MBS (Multicast Broadcast Service) transmission method, terminal and network equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0223]Taking the network device as the sender and the terminal as the receiver as an example, the terminal transmits the PDCP status report of the multicast channel through the unicast channel; wherein, the multicast and unicast channels for transmitting MBS services correspond to different PDCP entities.

[0224] like Figure 11 As shown, the network device maps the QoS flow of the MBS service to the MRB and the DRB respectively, and the MRB and the DRB each correspond to a set of PDCP entities / RLC entities.

[0225] Sender (network device side)

[0226] The network device transmits the MRB data packets in the multicast mode on the PDCP / RLC entity corresponding to the MRB.

[0227] The network device receives the PDCP status report sent by the terminal through the RLC / PDCP entity of the DRB, where the PDCP status report includes PDCP SN information of MRB PDCP PDUs that the terminal successfully receives and / or fails to receive.

[0228] Optionally, the PDCP entity of the D...

Embodiment 2

[0239] like Figure 12 As shown, the network device acts as the sender and the terminal acts as the receiver as an example, and the terminal transmits the PDCP status report of the multicast channel through the unicast channel; wherein, the multicast and unicast channels for transmitting MBS services correspond to one PDCP entity.

[0240] Sender (network device side):

[0241] The network device maps the QoS flow of the MBS service to the MRB respectively, corresponding to a PDCP entity, and the PDCP entity corresponds to RLC1 and RLC2. RLC1 adopts multicast transmission, and RLC2 adopts unicast transmission.

[0242] The network device sends the MRB data packets in the multicast mode on the PDCP / RLC1 entity corresponding to the MRB.

[0243] The network device receives the PDCP status report sent by the terminal through the RLC2 / PDCP entity, where the PDCP status report includes PDCP SN information of MRB PDCP PDUs that the terminal successfully receives and / or fails to rec...

Embodiment 3

[0251] like Figure 13 As shown, the network device acts as the sender and the terminal acts as the receiver as an example, and the terminal transmits the RLC status report of the multicast channel through the unicast channel; wherein, the multicast and unicast channels for transmitting MBS services correspond to different PDCP entities.

[0252] Sender (network device side):

[0253] The network device maps the QoS flow of the MBS service to the MRB and the DRB respectively, and the MRB and the DRB each correspond to a set of PDCP entities / RLC entities.

[0254] The network device transmits the MRB data packets in the multicast mode on the PDCP / RLC entity corresponding to the MRB.

[0255] The network device receives the RLC status report sent by the terminal through the RLC entity of the DRB, and the RLC status report includes the RLC SN information of the MRB RLC PDUs that the terminal successfully receives and / or fails to receive.

[0256] Optionally, the RLC entity of t...

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Abstract

Provided are a multicast broadcast service (MBS) transmission method, a terminal and a network equipment. The method comprises the steps of sending first feedback information to the network equipment through a layer 2 entity of unicast transmission, the first feedback information being used for indicating a reception condition of a multicast broadcast data packet by the terminal. According to the invention, the problem that the transmission reliability of the MBS service cannot be guaranteed due to the fact that the terminal cannot carry out effective feedback and requires the network equipment to carry out retransmission when the network equipment transmits the multicast broadcast data packet to the terminal at present can be solved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method, a terminal and a network device for transmitting an MBS of a multicast broadcast service. Background technique [0002] The multicast broadcast multimedia service (MBMS) service has been adopted in the third generation mobile communication technology (The 3rd Generation Mobile Communications, 3G) and the fourth generation mobile communication technology (the 4th Generation mobile communication technology, 4G) technology. long-term existence. figure 1 It is a long term evolution (Long Term Evolution, LTE) MBMS transmission architecture based on a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN). [0003] The services that need to be transmitted by broadcast and multicast are mapped to the broadcast and multicast channel so as to be transmitted to multiple terminals. like figure 2 It is the downlink channel map in 4G. The M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W24/10H04L1/16H04L1/18
CPCH04W4/06H04W24/10H04L1/1607H04L1/1806
Inventor 谌丽张大钧
Owner DATANG MOBILE COMM EQUIP CO LTD
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