I am looking after how specifically LTE/LTE-A resource allocation takes place at eNB of current cellular architecture? The answers I am looking for are
1. How many RB are allocated for each users and if the criteria is data-rate, how does eNB informs the UE about allocated resources?
2. As per my understanding, resources are assigned for each 10 ms time period and reassigned for the next time period of 10 ms.
3. In a given RB assignment of 10 ms period, does the number of resource blocks available = 20*N_ch. (where N_ch = subchannels in a given bandwidth)
4. What algorithms does the eNB use and on what basis does it gives priority to users?
These are the kind of things that are (on purpose) not standardized in LTE. It is only the size of the resources and the control signals that are specified. It is then up to every company to design their own resource allocation algorithms, in an effort to sell better products than the competitors.
These are the kind of things that are (on purpose) not standardized in LTE. It is only the size of the resources and the control signals that are specified. It is then up to every company to design their own resource allocation algorithms, in an effort to sell better products than the competitors.
As Emil said, the LTE resource allocation is implementation dependent. But the Standard tells you how this allocation is communicated and the minimum granularity (a PRB that is 180 Khz in frequency and 1 ms in time). Generally, when the dynamic resource allocation approach is followed, the resource allocation is informed through the PDCCH. The PDCCH carries Dowlink Contro Messages (DCIs), which inform UEs about their uplink grants (for TX on the PUSCH), downlink assigments (For RX on the PDSCH), TPC commands, etc. In the Frequency Division Multiplexing mode with dynamic scheduling, the resources are generally scheduled every millisecond. In the Time Division Multiplexing mode, the scheduling depends on the pattern between DL/UL and the scheduling peridicity may be up to 10 ms. The number of available PRBs depends on the BW. For instance, for 10 MHz BW in the FDD mode, up to 50 PRBS are available for Uplink and 50 PRBs for Downlink .
You can find more information about PDCCH resource allocation and PDSCH scheduling in the attached papers.
Article Downlink Packet Scheduling in LTE Cellular Networks: Key Des...
Article Allocation of Control Resources for Machine-to-Machine and H...
https://www.researchgate.net/publication/233731550_Downlink_Packet_Scheduling_in_LTE_Cellular_Networks_Key_Design_Issues_and_a_Survey?ev=post
Article Downlink Packet Scheduling in LTE Cellular Networks: Key Des...
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