Packet supplementing method and system for group communication

A group communication and packet replenishment technology, which is applied in the packet replenishment method and system field of group communication, can solve the problems of occupying huge air interface resources and system capacity, group communication packet loss, detection schemes that cannot be applied to group communication transmission schemes, etc. problem, to achieve the effect of ensuring data integrity and solving packet loss

CN109756846AInactive Publication Date: 2019-05-14CHENGDU TD TECH LTD
7 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-05-14
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a packet reissuing method and system for group communication, and the method comprises the steps: sending a message which is used for suggesting the establishment of a unicastbearer to a server when user equipment detects the loss of a data packet of the group communication, the unicast bearer being used for reissuing the lost data packet, and the message carrying corresponding data packet loss information; enabling the server to establish a unicast bearer for the user equipment according to the message; and enbaling the server to utilize the unicast bearer to retransmit a lost data packet indicated by the data packet loss information to the user equipment. By adopting the method and the device, the packet loss problem of group communication can be effectively solved, and the data integrity of the group communication is ensured.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to mobile communication technology, in particular to a packet supplement method and system for group communication. Background technique

[0002] The Mission Critical Service of the 3rd Generation Partnership Project (3GPP) includes Mission Critical Push To Talk (MCPTT) / Mission Critical Video / Mission Critical Data. At present, when group communication of these services is transmitted in a broadcast manner, retransmission of lost data packets is not supported.

[0003] However, for certain services (such as data group communication) that have high requirements on data integrity, the above-mentioned existing group communication transmission solutions cannot meet this requirement. Since the above-mentioned existing solution adopts the broadcast mode and does not support retransmission of data packet loss, when a packet loss occurs at the receiving end, the network side cannot know the occurrence of the packet loss, nor can i...

Examples

Embodiment Construction

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] The core idea of ​​the present invention is: when the user equipment detects that a data packet is lost, it will report the information of the lost data packet to the network side, so as to suggest that the network side establish a downlink unicast bearer for resending the lost data packet. After that, the network side According to the reported information, a downlink unicast bearer for resending the lost data packet will be established for the user equipment, so that the lost data packet can be resent to the user equipment. In this way, the data integrity of the group communication can be effectively guaranteed.

[0022] figure 2 It is a schematic flowchart of the group communication supplementary packet method provided by the e...