LTE Layer |MAC PDU Format in LTE

Protocol Testing Course |LTE |5G | ORAN Demo Date : 10/12/2023 Registration Link for Demo session of upcoming new batch: https://docs.google.com/forms/d/1TuKSH-kZRr4swQngwDpZABQtpeiT3G-EsIu0Hsy8FcA/edit WhatsApp Group : https://chat.whatsapp.com/Cd1FnGBw1xv7Ep3Hz2liSZ ---------------------------------------------------------------------------------------------- LTE MAC PDU Format for DL-SCH and UL-SCH The MAC PDU (Protocol Data Unit) format in LTE varies depending on the specific transmission scenario, such as DL-SCH (Downlink Shared Channel), UL-SCH (Uplink Shared Channel), or control signaling. Here is a general overview of the MAC PDU format: MAC Header: Mac Header consists of multiple subleaders. Below are the MAC header components. RNTI (Radio Network Temporary Identifier): Identifies the UE or group of UEs associated with the MAC PDU. MCS (Modulation and Coding Scheme): Specifies the modulation and coding scheme to be used for the transmission. HARQ Process Information: Indicates the HARQ process number and related information for error detection and correction. Transport Block Size Information: Specifies the size of the transport blocks within the MAC PDU. Sub header: MAC header consists of multiple subheaders One subheader for each control element, MAC SDU, or padding Each subheader is 1, 2, or 3 bytes in length Control element, fixed or variable length payload PDU Type: Indicates the type of MAC PDU, such as a DL-SCH PDU, UL-SCH PDU, or control PDU. Length: Specifies the length of the MAC PDU in bits or bytes. Control Information: Contains additional control information specific to the PDU type, such as channel information or special flags. In Above figure we can see subheader of L filed 7 and 15 bits. Where, R=Reserved bit (1 bit) set to 0. E=Extension (1 bit) defines if more fields are present in sub-header LCID= Length is 5 bits F= Format (1 bit) L= Length 7/15 bits (size of SDU) --------------------------------------------------------------------------------- Regards Techlteworld Subscribe on LinkedIn Subscribe on LinkedIn : https://www.linkedin.com/newsletters/7084940790606557184/ http://youtube.com/@techLteworld www.techlteworld.com https://t.me/+Zv9SWJbksX3TRgLQ https://www.linkedin.com/in/techlte-world-ba58071b7/ https://www.instagram.com/tlwlabs/ https://www.facebook.com/profile.php?id=100021063124697 Hi All, Please go through the below Topics Links: -------------------- 4G-LTE -------------------- LTE Architecture and its Interfaces : https://techlteworld.com/lte-architecture-and-its-interfaces/ LTE UE Power ON procedure : https://techlteworld.com/lte-ue-power-on-procedure/ MIB (Master Information Block) in LTE : https://techlteworld.com/mib-master-information-block-in-lte/ RACH (RANDOM ACCESS CONTROL CHANNEL) in LTE : https://techlteworld.com/2022/01/17/rach-random-access-control-channel-in-lte/ Carrier Aggregation in LTE- A (LTE Advanced) : https://techlteworld.com/carrier-aggregation-in-lte-a-lte-advanced/ HARQ (Hybrid Automatic Repeat Request) in LTE : https://techlteworld.com/harq-hybrid-automatic-repeat-request-in-lte/ NDI (New Data Indicator) bits in LTE : https://techlteworld.com/ndi-new-data-indicator-bits-in-lte/ DRX (DRX (Discontinuous Reception) in LTE : https://techlteworld.com/drx-discontinuous-reception-in-lte/ RLF (Radio Link Failure) in LTE : https://techlteworld.com/rlf-radio-link-failure-in-lte/ Paging procedure in LTE : https://techlteworld.com/paging-procedure-in-lte/ Handover in LTE :https://techlteworld.com/handover-in-lte/ LTE Events : Measurements Reporting : https://techlteworld.com/lte-events-measurements-reporting/ S1 Handover Call flow : https://techlteworld.com/s1-handover-call-flow/ X2 Handover Call flow : https://techlteworld.com/x2-handover-call-flow/ DCI (Downlink Control Information) in LTE : https://techlteworld.com/dci-downlink-control-information-in-lte/ LTE MAC Layer Overview : https://techlteworld.com/lte-mac-layer-overview/ MAC CE (Control Element ) in LTE : https://techlteworld.com/mac-ce-control-element-in-lte/ PHR (Power Headroom Report) in LTE : https://techlteworld.com/phr-power-headroom-report-in-lte/ SIB (System Information Block) in LTE : https://techlteworld.com/sib-system-information-block-in-lte/ System Information Block 1 (SIB-1) in LTE : https://techlteworld.com/system-information-block-1-sib-1-in-lte/ System Information Block 2 (SIB-2) in LTE : https://techlteworld.com/system-information-block-2-sib-2-in-lte/ LTE MAC Scheduler : https://techlteworld.com/lte-mac-scheduler/ LTE MAC PDU Format for DL-SCH and UL-SCH : https://techlteworld.com/lte-mac-pdu-format-for-dl-sch-and-ul-sch/ https://www.linkedin.com/groups/12504513/