Inter-frequency inter-public land mobile network (PLMN) discovery
摘要
說明書
In one aspect, the present technology uses RRC signaling messages to allow eNBs and operators/PLMNs to control a transmission rate and interference load from not-served UEs. In addition, inter-PLMN alignment of discovery transmission and reception intervals can improve discovery performance. In particular, inter-PLMN alignment of discovery transmission and reception intervals can help avoid situations such as, for example, when two UEs cannot discover each other because they never transmit and receive on the same frequency. In order to avoid this, the scheduling of inter-PLMN discovery announcement and or monitoring can be introduced and depend on inter-PLMN identity, which is currently transmitted jointly with SIB19 discInterFreqList. The “discInterFreqList” can be a field in an abstract syntax notation one (ASN.1) RRC signaling contained in the SIB19. The discInterFreqList can Indicate the neighboring frequencies on which sidelink direct discovery announcement is supported.
It should be noted that in regards to inter-PLMN alignment of discovery transmission and reception intervals, there can be different operators (PLMNs) that have no coordination of configuring discovery resources in the carriers of the different operators (PLMNs). Thus, transmission and reception resources (i.e. intervals) may not aligned and may either overlap, partially overlap or do not overlap. In one aspect, a UE can be configured with reception interval for inter-frequency/PLMN discovery which is orthogonal to discovery resource pool in another carrier, thus the UE cannot discover other UEs from another carrier because the monitoring/reception interval of the UE is not aligned with transmission of UEs in another carrier.
