Access information distribution Clause Samples

Access information distribution. The access information in the current assumption includes the random access parameters. These parameters include selected parts of the MIB, SIB1 and SIB2 information elements defined in LTE (e.g. PLMN Id, CSG, Q-RxLevelMin, Frequencybandindicator and Prach-configCommon). Energy efficiency may be achieved if one can define the previously described access information as a self-contained system information signal i.e., with its own synchronization sequences, reference symbols and payload. By doing that the network does not need to transmit C-RSs over the whole band all the time (at least for the purpose of decoding system information). Future proofness can also be achieved by defining the access information as a self-contained signal once time- frequency resources are less occupied and allow the introduction of novel physical channels. In the case of energy efficiency it is obvious that having signals broadcasted all the time and over the whole bandwidth disable the possibility of the network applying DTX cycles to its power amplifiers to save energy and control the level of interference being generated. This is potentially worse in ultra-dense scenarios expected in 5G. Therefore, in order to fulfill energy efficiency and future proofness requirements, ▇▇▇▇▇-▇▇ has started to investigate the impact of neighbors transmitting signals that follow an ultra-lean design of the broadcast system information, as shown in Figure 4-2. The adoption of the self-contained principle for access information creates further opportunities. The PSS/SSS would not be needed for decoding system information (i.e., since it is a signal with its own synchronization signals) so that the access information distribution does not need to be associated anymore with the cell concept (or any other network location concept). That principle would allow the split between system control plane and user plane (UP) where the UP access could have its own synchronization signals which would further enable the massive deployment of low-power access nodes without excessive overhead cost. In very dense deployments supporting very high data rates (e.g. by means of large bandwidth and/or a large number of antenna elements) the individual nodes will have no data to transmit or receive most of the time. This separation from the cell concept could be beneficial in cases of unplanned small cell deployments, since the system information is decoupled from the cell concept where system information could be trans...