hash stringlengths 32 32 | doc_id stringlengths 7 13 | section stringlengths 3 121 | content stringlengths 0 2.2M |
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e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.11 DLC Core Block format | First block of a DLC transmission, the DLC Core Block (DLCC_Block) shall be formatted with four fields, as detailed in Table 4-86. Table 4-86: Format of a DLC Core block Field length (in bits) 24 32…168 2 8 Field content MPAI Block_SDU Reserved Block_CRC MPAI MAC Pre-addressing Info Field formatted according to Table 4... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.12 DLC Core Block format for HDR burst structure | First block in a DLC transmission with HDR burst structure, the DLC Core Block shall be formatted with four fields, as detailed in Table 4-87. Table 4-87: Format of DLC core block for HDR burst structure Field length (in bits) 24 16 to 136 4 2 8 Field content MPAI Block SDU Custom Block Info Reserved CRC MPAI MAC Pre-a... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.13 Radio-burst formats in DL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.13.1 Introduction | In downlink, the radio-bursts are of five types: • Sync Burst Data Unit (S_BDU): radio-bursts that are transmitted before a core frame and before each block of the extension frame. • Core frame Burst Data Unit (C_BDU): radio-bursts that are part of a DLA core frame or a Beacon Core frame. • Extension frame Burst Data U... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.13.2 S_BDU format in DLA | For easier synchronization in the receiver (e. g. for low performance receivers), an optional additional synchronization radio-burst may be sent for transmissions with standard or concatenated burst structure. If an additional synchronization burst is sent, it shall be sent before the core frame and before each block o... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.13.3 C_BDU format in DL | In DLA and DLB transmission modes, the Burst Data Units in the Core frame (C_BDU) shall be formatted according to Table 4-89. Table 4-89: C_BDU format in DLA and DLB transmission modes Field length (in bits) 8 12 8 Field name PS_DA DATA_A PS_DB Content of the three fields in a C_BDU shall be according to clause 4.7.4.5... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.13.4 E_BDU format in DL | In DLA and DLB transmission modes, the Burst Data Units in an Extension frame (E_BDU) shall be formatted according to Table 4-90. Table 4-90: E_BDU format in DLA and DLB transmission modes Field length (in bits) 0 … 12 8 12 8 0 … 12 (see note) Field name DATA_B PS_DA DATA_A PS_DB DATA_C NOTE: The maximum size of DATA_C... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.13.5 SB_BDU format in DL (deprecated) | In DL-SB transmission mode, telegram splitting shall not be used. Therefore, the PHY payload shall be transmitted in one or two continuous radio-bursts, depending on the length of the PHY payload. The BDUs shall be formatted, as follows: • a fixed length of 78 symbols for the core frame BDU, as specified in Table 4-92;... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.13.6 H_BDU format in DL for HDR burst structure | In DLA and DLC transmission modes at ULP8 symbol rate, the Burst Data Units in the Core frame and extension frame (H_BDU) shall be formatted according to Table 4-94. Table 4-94: H_BDU format in DLA and DLC transmission modes at ULP8 data rate Field length (in bits) 0…36 16 36 16 0…36 Field name DATA_B PS_DA DATA_A PS_D... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.14 Radio frame formats in DLA mode | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.14.1 Core frame format in DLA mode | The core frame is used as authenticated wakeup and acknowledgment of the previous end-point uplink transmission. Every downlink transmission shall consist of a core frame and may be followed by an optional extension frame. The succeeding extension frame shall be indicated in the core frame. The core frame shall consist... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.14.2 Extension frame format in DLA mode | The extension frame is an optional transmission frame to transmit user data. The extension frame contains a minimum of 56 bits (7 bytes) and a maximum 2 040 bits (255 bytes) of PSDU data. The PSDU contains the MPDU data with additional zero padding if needed. The extension frame shall be split into blocks of at most 24... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.14.3 DLA Frame format for HDR burst structure | Figure 4-26 illustrates the DLA frame construction with HDR burst structure. The core frame of DLA with HDR burst structure shall be used in the same way as in clause 4.7.2.14.1 and shall consist of 5 radio-bursts. PS_DA field and PS_DB field of each radio-burst in the core frame shall be filled with symbols derived fr... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.15 Radio frame formats in DLB mode | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.15.1 Overview of a DLB frame | In DLB transmission mode, emission of bursts occurs within a time & frequency structure, named DLB structure. A DLB structure consists of a number of Physical Resource Blocks (PRB). Each PRB consists of 36 Resource Elements (RE), where a radio-burst may be transmitted. , is the length of a DLB structure, express... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.15.2 Physical Resource Blocks and Resource Elements definitions | Each region of a DLB frame shall be divided, in the time domain, into Physical Resource Blocks (PRBs). The beacon core frame region shall consist of one physical resource block. Each beacon extension frame region shall consist of one physical resource block. Each data region shall consist of , physical resource... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.15.3 Density of PRBs | Resource blocks can either be used in a low- or high-density configuration depending on the amount of data to be transmitted in the resource block. In low-density, only the 18 even-indexed resource elements in a PRB shall be used for radio-burst transmission. In high-density, the 36 resource elements in a PRB shall be ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.16 Radio frame formats in DLC mode | A radio frame in DLC mode shall consist of a core frame and may be followed by one or several extension frame blocks, depending on the payload size to be transmitted. A maximum of 255 bytes can be transmitted in a MAC payload. The core frame shall be either formatted as DLC Core Block with 18 radio-bursts according to ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.2.17 Radio frame formats in DL-SB mode (deprecated) | In DL-SB, a radio frame shall consist of a core frame and an optional extension frame, depending on the PHY payload length (see clause 4.7.2.13.5). The core frame shall be transmitted in one radio-burst. The extension frame, if any, shall be transmitted in one radio-burst, on the same centre frequency as the core frame... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3 PHY functions in UL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.1 Modulation in UL | A LTN system using TS-UNB protocol shall use MSK Modulation or GMSK Modulation with BT = 1.0 in the uplink. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.2 Symbol mapping in UL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.2.1 Overview | The bits of the Burst Data Unit and Sync-burst Data Unit shall be mapped according to the symbol representation of Figure 4-28. Figure 4-28: Symbol mapping for MSK/GMSK with absolute phase The representation shall be repeated after 4 symbols. is the start time of the PHY transmission with a symbol duration of . |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.2.2 Symbol rates in uplink | The symbol rate of the (G)MSK modulation in ULZ transmission mode shall be selected according to the definitions in Table 4-2 and the allowances in Table 4-3. The tolerance of the symbol rate shall be kept within the range defined in Table 4-155. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.3 Data Whitening function in UL | The complete PHY Payload (see clause 4.7.1.2 and Figure 4-22) shall be whitened using the PN9 sequence defined in IEEE 802.15.4 [1]. ETSI ETSI TS 103 357-2 V2.1.1 (2024-06) 83 |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.4 CRC functions in UL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.4.1 Payload CRC in UL | An 8-bit Cyclic Redundancy Check (CRC) according to clause 4.7.5.2 shall be used. The payload CRC shall be calculated over MPDU and MMODE field according to clause 4.7.5.2. In case of zero padding the padded zeros shall be omitted for the CRC calculation (see Figure 4-29). Figure 4-29: Calculation of Payload CRC |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.4.2 Header CRC in UL | An 8-bit cyclic redundancy check (CRC) according to clause 4.7.5.2 shall be used. The additional Header CRC shall be calculated over Payload CRC and PSI according to clause 4.7.5.2 (see Figure 4-30). Figure 4-30: Calculation of Header CRC |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.5 Forward Error Correction function in UL | A Forward Error Correction code (FEC) according to clause 4.7.5.3 shall be calculated over the complete PHY payload after data whitening. The FEC extends the original series of 186 - 826 uncoded bits to a series of 576 - 2 496 encoded bits. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.6 Interleaving function in UL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.6.1 Introduction | After data whitening and FEC, the FEC coded bit-stream of the PHY payload shall be distributed to sub-packets of the core and extension frame by the interleaver in a way, that the information of the PHR field (see clause 4.7.1.4) required to receive the extension frame are contained in the core frame. The length of the... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.6.2 Bit assignment to sub-packets | The stream of cyclically shifted bits shall be indexed in ascending order with ∈{0, 1, 2 … ( −1)}, where = 0 represents the first bit. These bits shall be placed into the ) = ( + sub-packets. The sub-packet index ∈{0, 1, 2, … , ( −1)} gives the index of the sub-packet a symbol will be placed in after ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.3.6.3 Bit placing within Burst Data Unit | Once all bits are assigned to a sub-packet, the bits shall be interleaved within a sub-packet and assigned to their position on the burst data unit. Bits with a lower index shall be mapped to symbols around the pilot sequence and bits with a higher index shall be mapped to symbols closer to the start and the end of t... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4 PHY functions in DL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.1 Block slicing | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.1.1 Overview | The block slicing function shall be used in the extension frame in DLA and DLC mode and for data frames in DLB mode. It cuts the PHY_Payload into one or several Block_SDU(s) (see Figure 4-32). The maximum size of a Block_SDU shall be 192 bits for standard burst structure and 160 bits for HDR burst structure. The minimu... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.1.2 Block slicing in DLA | The number of blocks B that shall be used for the transmission shall be determined according to the following formula: = , where ∈{1,2 … 255}, shall be the PSDU size in byte. The extension frame blocks shall be numbered in ascending order to their respective transmission time. Block = 1 shall be the block d... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.1.3 Block slicing in DLC | In DLC the core frame already carries up to 21 byte of PSDU. The number of blocks B in the extension frame is then calculated according to: = , The first 21 bytes are assigned to the core block, the following bytes are evenly spread over all blocks in the extension frame. In case the number of bytes is not... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.1.4 Block slicing in DLA for high data rate burst structure | For high data rate burst structure with only 5 radio-bursts, the maximum size of a Block_SDU shall be 160 bits. The minimum size of a Block_SDU shall be 40 bits. The number of blocks B that shall be used for the transmission shall be determined according to the following formula: = , where ∈{1,2 … 255}, shall... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.1.5 Block slicing in DLC for high data rate burst structure | For DLC, an additional MPAI field is used in the DLC Core Block reducing the size of the Block_SDU by 24 bits. Therefore in DLC for high data rate burst structure the core frame already carries up to 17 byte of PSDU. The number of blocks B that shall be used for the extension frame shall be determined according to the ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.2 CRC function in DL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.2.1 Core frame case | A 4-bit CRC, according to clause 4.7.5.2, shall be used for the downlink core frame. The same CRC shall be used for DL-SB and DLA Mode. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.2.2 Extension frame | An 8-bit CRC, according to clause 4.7.5.2, shall be used for the downlink extension frame. The same CRC shall be used for DL-SB and DLA Mode. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.2.3 Beacon core frame case | A 4-bit CRC, according to clause 4.7.5.2, shall be used for the beacon core frame. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.2.4 Beacon extension frame case | An 8-bit CRC, according to clause 4.7.5.2, shall be used for the beacon extension frame. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.2.5 DLB_Data frame case | An 8-bit CRC, according to clause 4.7.5.2, shall be used for the DLB_Data frame. ETSI ETSI TS 103 357-2 V2.1.1 (2024-06) 88 |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.2.6 DLC core and extension frame case | An 8-bit CRC, according to clause 4.7.5.2, shall be used for the DLC core and extension frame. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.3 Data Whitening function in DL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.3.1 Core block case | The complete DLA Core block (see clause 4.7.2.3 (no timing flexibility) or clause 4.7.2.4 (timing flexibility activated)) shall be whitened using the PN9 sequence defined in IEEE 802.15.4 [1]. In the same way, the complete DLC Core Block (see clause 4.7.2.11) shall be whitened using the PN9 sequence defined in IEEE 802... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.3.2 Data Extension block case | The DE_Blocks of a DLA extension frame (see clause 4.7.2.10), the DLB data frame, and the DLC extension frame shall be whitened using the PN9 sequence defined in IEEE 802.15.4 [1]. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.3.3 Beacon core block case | The content of the Beacon core block (BC_Block) shall be whitened using the PN9 sequence defined in IEEE 802.15.4 [1]. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.3.4 Beacon extension block case | The content of the Beacon extension block (BE_Block) shall be whitened using the PN9 sequence defined in IEEE 802.15.4 [1]. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4 Forward Error Correction function in DL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4.1 Core frame case in DLA mode | A forward error correction, calculated according to clause 4.7.5.3, shall be used to protect the DLAC Block of the downlink core frame. The FEC shall be calculated over all bits of the DLAC Block after data whitening. After FEC, the sequence of 78 bits results in 252 encoded bits, named a coded block. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4.2 Extension frame case in DLA mode | A forward error correction, calculated according to clause 4.7.5.3, shall be used to protect the DE_Blocks of the downlink extension frame block. Each DE_Block shall be encoded separately. The FEC shall be calculated over all bits of the Data Extension block after data whitening. One block can transmit 66 to 202 uncode... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4.3 Beacon core block case | After whitening, a forward error correction, calculated according to clause 4.7.5.3, shall be used to protect the Beacon Core Block. The result is a code block of 216 bits. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4.4 Beacon extension block case | After whitening, a forward error correction, calculated according to clause 4.7.5.3, shall be used to protect the Beacon Extension Block. The result is a coded block of 216 to 624 bits. ETSI ETSI TS 103 357-2 V2.1.1 (2024-06) 89 |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4.5 DE_Block of a DLB frame | After whitening, a forward error correction, calculated according to clause 4.7.5.3, shall be used to protect the DE Block of a DLB frame. The result is a coded block of 216 to 624 bits. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4.6 DL-SB mode case (deprecated) | No forward error correction shall be used in DL-SB Mode. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.4.7 DE Blocks of a DLC frame | After whitening, a forward error correction, calculated according to clause 4.7.5.3, shall be used to protect the DE_Blocks of a DLC frame. The result is a coded block of 216 to 624 bits. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5 Interleaving function in DL | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.1 Core frame case in DLA mode | The coded PHY payload shall be interleaved according to Table 4-98, whereas: • s = sub-packet index 0 … S-1 • m = symbol index in radio-burst • the numbers in the table represent the bit number of the PHY payload of the core frame Table 4-98: DLA core frame interleaver mapping of coded bits onto radio-bursts m \ s 0 1 ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.2 Extension frame case in DLA mode | Interleaving of the extension frame shall also be done block-wise. The minimal input length of the interleaver is 216 bits which corresponds to the number of required data bits in one coded block of the extension frame. The maximum input length per block is 624 bits, thus not all symbols of the data fields in the radio... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.3 Sync data frame interleaving | After FEC, the coded block of the sync data frame shall be interleaved and assigned to the three sub-packets of the sync data frame according to Table 4-100. Table 4-100: Sync Data frame interleaving and mapping m\s 0 1 2 m\s 0 1 2 m\s 0 1 2 0 102 103 104 20 2 0 1 40 40 41 39 1 97 98 96 21 3 4 5 41 47 45 46 2 92 90 91 ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.4 Data Extension block interleaving for HDR burst structure | The coded blocks of an Extension frame in HDR burst structure shall be interleaved as for DLC DE coded blocks of a DLC frame with HDR burst structure (see clause 4.7.4.5.9). |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.5 Beacon core block interleaving | After whitening and FEC, the coded block of a beacon core shall be processed by the interleaving function, as specified in clause 4.7.4.5.1. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.6 Beacon extension block interleaving | After whitening and FEC, the coded blocks of a beacon extension shall be processed by the interleaving function, as specified in clause 4.7.4.5.2. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.7 Data Extension block interleaving of a DLB frame | After whitening and FEC, the coded blocks of a DLB frame shall be processed by the interleaving function, as specified in clause 4.7.4.5.2. ETSI ETSI TS 103 357-2 V2.1.1 (2024-06) 92 |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.8 Data Extension block interleaving of a DLC frame | After whitening and FEC, the coded blocks of an extension frame in DLC shall be processed by the interleaving function, as specified in clause 4.7.4.5.2. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.9 Data Extension block interleaving for DLC with HDR burst structure | The coded blocks of a DLC extension frame shall be interleaved according to Table 4-101, whereas: • s = sub-packet index 0 … S-1 • m = symbol index in radio-burst • the numbers in the table represent the bit number of the coded blocks. Table 4-101: DLC frame interleaver symbol mapping m\s 0 1 2 3 4 m\s 0 1 2 3 4 m\s 0 ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.5.10 DL-SB Mode (deprecated) | No interleaving is used in DL-SB Mode. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.6 Modulation in downlink | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.6.1 DLA, DLB, and DLC modes | For DLA, DLB, and DLC modes, an MSK modulation or a GMSK modulation, with BT = 1,0 shall be used. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.6.2 Modulation in DL-SB mode (deprecated) | For the DL-SB mode, a GFSK modulation with a symbol rate of 600 Baud and modulation index h = 1 (deviation 300 Hz) shall be used. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.7 Symbol mapping in downlink | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.7.1 Symbol mapping in DLA, DLB, and DLC modes | The same symbol mapping as in uplink shall be used. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.7.2 Symbol mapping in DL-SB mode (deprecated) | In DL-SB transmission mode, the BDU bits shall be mapped one bit per symbol (GFSK modulation). |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.4.8 Symbol rates in DLA, DLB, and DLC modes | The symbol rates of the (G)MSK modulation in DLA, DLB, and DLC modes shall be selected according to the definitions in Table 4-2 and the allowances in Table 4-3. The tolerance of the symbol rate shall be kept within a range defined in Table 4-157. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.5 Common PHY functions | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.5.1 Introduction | There are common PHY functions which are used in different sections of the physical layer. They are described here to be referenced in the appropriate sections. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.5.2 CRC | All 2-bit CRCs shall be calculated with the following parameters: • 2-bit length (CRC-2) • Polynomial: 0x3 • Initial value: 0x3 • No XOR All 4-bit CRCs shall be calculated with the following parameters: • 4-bit length (CRC-4) ETSI ETSI TS 103 357-2 V2.1.1 (2024-06) 94 • Polynomial: 0x3 • Initial value: 0xF • No XOR All... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.5.3 FEC | All FECs shall be calculated with the following parameters: • Convolutional code • Rate: 1/3 • Polynomials (0155, 0123, 0137) (octal), (0x6D, 0x53, 0x5F)) (hex) • Constraint length: 7 • Zero-tailing |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.5.4 FEC for staircase | FEC for the sync staircase data frame shall be calculated with the following parameters: • Convolutional code • Code rate: 1/2 • Polynomials (0171, 0133) (octal), (0x79, 0x5B) (hex) • Constraint length: 7 • Zero-tailing ETSI ETSI TS 103 357-2 V2.1.1 (2024-06) 95 |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6 PHY procedures | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1 TSMA schemes for ULZ and DLA transmission mode | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.1 Overview on ULZ and DLA | In the TS-UNB protocol, the application message is not transmitted in one radio-burst. The PPDU of the TS-UNB protocol in ULZ and DLA transmission modes shall be split into several radio-bursts, which are distributed over time and frequency (see Figure 4-33). The set of radio-bursts belonging to one message is called r... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.2 Frame Repetition in UL | For performance improvement, a radio frame consisting of a core frame and extension frame may be repeated. The repeated radio frame rFRAME shall have the identical data format as the initial radio frame iFRAME. Both transmissions, iFRAME and rFRAME shall use the same TSMA pattern of the uplink TSMA pattern group UPG2 w... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.3 Frame repetition in DL | In DLA mode, only the core frame may be repeated. The downlink extension frame shall not be repeated. The repetition of the downlink core frame uses the second half of the downlink TSMA pattern. NOTE: There is no repetition in DLB or DLC transmission mode. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.4 Radio-burst timing in TSMA patterns | The start time of the first radio-burst s=0 of a radio frame is randomly chosen by the end-point. shall be the middle point of the radio-burst, i.e. the middle of the pilot sequence in uplink, or the middle of the Data Field 0a in downlink. The transmission time of radio-burst s is defined by !(), the actual tim... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.5 Time and frequency random offsets | Pseudo-random offsets in time and frequency derived from the header and payload CRC shall be added to the selected TSMA pattern start time and start frequency, as illustrated in Figure 4-37. Figure 4-37: Definition of frame start offset parameter The timeslot offset is given in an integer number of timeslots, where... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.6 Uplink TSMA pattern for core frame | The sets of radio-burst carrier and radio-burst time of the uplink TSMA pattern shall be according to Table 4-108, Table 4-109, Table 4-110, Table 4-111, Table 4-112, Table 4-113, Table 4-114, and Table 4-115, where s is the sub-packet index, as defined in clause 4.7.4.5, and p is the pattern number in the ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.7 Uplink TSMA pattern for extension frame | The TSMA pattern for the extension frame is derived from information of the core frame. The TSMA pattern of the extension frame is generated using a pseudo random number derived from the core frame information. A 16-bit Linear Feedback Shift Register (LFSR) shall be used to generate a random number [] for every -th... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.8 Specific case of TSMA pattern for DL-SB mode (deprecated) | In DL-SB Mode, no telegram splitting shall be used. Hence for the transmission of a radio-burst the carrier offset = 0 from the selected pattern of TSMA pattern group shall be used for core and extension frame. |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.9 Uplink TSMA Pattern for ULP8 symbol rate | For ULP8 symbol rate, the occupied bandwidth of the transmitted signal is broader compared to ULP symbol rate, thus to realize non overlapping radio-burst transmission, the carrier spacing is increased according to Table 4-147. For the standard channel bandwidth of 200 kHz, only 8 carriers are available. For transmissi... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.10 Downlink TSMA patterns for normal radio-bursts | When ULP symbol rate is used for DLA transmission, a radio frame consists of 18 radio-bursts. Therefore, TSMA pattern sets with 18 parameters according to Table 4-123 and Table 4-124 shall be used. Table 4-123: Radio-burst carrier set of TSMA Pattern Group in downlink (DPG) s p () 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.11 Timing flexibility procedure | The timing flexibility procedure is available for DLA transmission only. It impacts the three downlink transmission delays (see Figure 4-39): • the delay between the DLA core block and the fist DLA extension block • the delay between two successive extension blocks in a DLA extension frame • an additional delay within ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.12 Downlink TSMA patterns for concatenated radio-bursts | When ULP2 or ULP8 symbol rates are used for DLA transmission together with burst concatenation, the sets of three consecutive radio-bursts of the core frame and the extension frame are seamlessly joint together over the air, thanks to specific TSMA pattern tables for the frequency selection and for the radio-burst time... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.1.13 Downlink TSMA patterns for HDR burst structure | The downlink TSMA patterns for HDR radio-bursts may be used in class A mode with ULP8 symbol rate. The TSMA pattern are calculated dynamically based on some parameters of the corresponding uplink message of an end-point, which is only known to the base station and the end-point. A 32-bit BSSH number according to Table ... |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.2 TSMA schemes for DLB transmission mode | |
e0bec777474cb75ac0ad394ec0a20d10 | 103 357-2 | 4.7.6.2.1 Overview | In DLB transmission mode, a message is split into multiple radio-bursts, that are transmitted onto the resource elements of the DLB frame. The DLB frame contains N,, # resource elements (see clause 4.7.2.15.1), which are distributed over time and frequency patterns. These time and frequency patterns are typically dif... |
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