A UE configured as Receive Only Mode can receive only MBMS broadcast service over E-UTRAN without the need to access and register with the PLMN offering the MBMS service. A UE configured to operate in Receive Only Mode shall shall camp on a network cell in an eMBMS Broadcast carrier, shall attempt to receive MBMS service based only on a standardised TMGI value range for Receive Only Mode. The UE shall not attempt to receive MBMS service for TMGIs outside the standardized TMGI range. The UE shall refrain from any Mobility Management or other signalling with the network offering MBMS. The UE uses the acquired system information to receive MBMS broadcast. Use of Receive Only Mode does not require USIM for the UE.
A UE may be configured as Receive Only Mode with independent unicast using EPS bearer contexts. This configuration option allows a UE to operate as Receive Only Mode (as defined above) for MBMS broadcast service, and independently follows regular NAS/RRC procedures for unicast service with a PLMN. This mode of operation requires USIM and PLMN subscription to receive unicast service. No additional subscription or credentials are required to receive MBMS broadcast service.
Any device that is equipped with MBMS broadcast receiver and is configured to operate in Receive Only Mode is able to receive the broadcast content, with the following characteristics:
No PLMN credentials/subscription are required, as long as use of EPS unicast bearers is not required by the device.
Without PLMN credentials/subscription, the UE can only access broadcast services without subscription. The content can be Free To Air (FTA) content as defined in TS 22.101 in which case it can be viewed without content subscription.
There is no need for the UE to support uplink.
The UE is preconfigured with all the necessary information for the UE to acquire the system information and receive MBMS service. This information includes:
PLMN ID(s) that provide the MBMS service.
In the case of the network providing MBMS service in MBMS transport only mode, the TMGI(s) for each MBMS service need to be configured in the UE.
The unicast component is active only in Receive Only Mode with independent unicast. The unicast component follows regular NAS/RRC procedures for E-UTRAN/EPC in order to receive unicast service.
For the broadcast component, the UE is configured with MBMS radio resources for TV service with no PLMN subscription. The broadcast component of the UE shall camp on a network cell in an eMBMS Broadcast carrier and shall attempt to receive MBMS service based only on a standardised TMGI value range. The UE shall not attempt to receive MBMS service for TMGIs outside the standardized TMGI range. The broadcast component shall refrain from any Mobility Management or other signalling with the network offering MBMS. The broadcast component uses the acquired system information to receive MBMS broadcast.