Multicast realization method and device in long term evolution LTE fault single station mode

Abstract

The invention provides a multicast realization method and device in a long term evolution LTE fault single station mode. The multicast realization method and device in the long term evolution LTE fault single station mode comprises that when an LTE base station is a fault single station, the fault single station receives a call request signal message sent by a piece of calling UE (User Equipment), wherein the identifier of a multicast group in which the calling UE is located is carried in the call request signal message; the fault single station sends a call receiving feedback message to the calling UE; the fault single station sends indication messages to multiple pieces of called UE, wherein the indication messages comprise a multicast IP address and port number information corresponding to the identifier, and the indication messages are used for indicating that the called UE stops triggering an IGMP (Internet Group Management Protocol) join-in process and establishes a multicast receiving process; and the fault single station receives IP messages sent by the calling UE, copies and distributes the IP messages to the baseband boards corresponding to multiple cells in the groups in which the called UE is located and sends the IP messages to the multiple pieces of called UE. According to the method and the device, the multicast service in the fault single station mode can be realized.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method and device for realizing long-term evolution LTE fault single-site multicast. Background technique [0002] Multicast refers to sending data packets to a certain set of nodes (ie multicast group) in the form of best-effort transmission in the network interconnection protocol IP network. The source host, that is, the multicast source, only sends one copy of data, and its destination address is Multicast group address; all receivers in the multicast group can receive the same data copy, and only the hosts in the multicast group can receive the data, while other hosts cannot receive it. [0003] In the prior art, when a user equipment (User Equipment, referred to as UE) establishes a data multicast group, a video multicast group, or a voice multicast group, it needs to pre-configure the multicast IP address corresponding to the multicast group, and the user equipment need...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when a user equipment (User Equipment, referred to as UE) establishes a data multicast group, a video multicast group, or a voice multicast group, it needs to pre-configure the multicast IP address corresponding to the multicast group, and the user equipment needs to send Internet Group Management Protocol (Internet Group Management Protocol, referred to as IGMP) to join the message to join the multicast group, long-term evolution (Long Term Evolution, referred to as LTE) system, most of the UE in the radio resource control (Radio Resource Control, referred to as: RRC) In idle (IDLE) state, there is no connection with the network. When a group call is established, multiple called UEs enter the RRC connection state at the same time and initiate random access. However, the air interface resources are limited, and a large number of random access caused by multiple users will cause resource conflicts. , these will affect the signaling chain establishment process between the user equipment and the Long Term Evolution (LTE) base station multicast group service, and will also increase the time for multicast chain establishment

Moreover, if the LTE base station is in the fault single-site mode, the fault single-site mode means that the base station is disconnected from the core network side, the base station is in an isolated state, and user equipment cannot join the multicast group

Images