Coverage extension level for coverage limited device
First Claim
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1. An apparatus of an enhanced node B (eNB), the apparatus comprising:
- memory; and
processing circuitry, configured to;
encode transmission symbols with a master information block (MIB), for transmission of a physical broadcast channel (PBCH), the MIB comprising information pertaining to a cell;
map the transmission symbols to resource elements (REs) of a plurality of consecutive radio frames for a single transmission of the PBCH in each of the consecutive radio frames;
when the cell is configured for repetition of the PBCH, map the transmission symbols to additional REs of each of the consecutive radio frames in accordance with a predetermined mapping for additional transmissions of the PBCH in each of the consecutive radio frames; and
configure transceiver circuitry to transmit the PBCH in the REs of the consecutive radio frames, including the additional REs of the consecutive radio frames for repetition of the PBCH, wherein the predetermined mapping indicates a frame offset, a slot number and symbol number for each repetition of the PBCH in each of the consecutive radio frames,wherein when configured for time division duplexed (TDD) operation, the additional number of times is at most 5, and when configured for frequency division duplexed (FDD), the additional number of times is at most 4.
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Abstract
Generally discussed herein are systems, apparatuses, and methods that can provide a coverage enhancement to a coverage limited device. According to an example a method can include repeating a Physical Broadcast Channel (PBCH) data transmission multiple times over multiple sub-frames to a coverage limited Machine Type Communication (MTC) User Equipment (UE), or repeating the PBCH data transmission two or three times within one sub-frame to the coverage limited MTC UE.
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Citations
19 Claims
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1. An apparatus of an enhanced node B (eNB), the apparatus comprising:
memory; and
processing circuitry, configured to;encode transmission symbols with a master information block (MIB), for transmission of a physical broadcast channel (PBCH), the MIB comprising information pertaining to a cell; map the transmission symbols to resource elements (REs) of a plurality of consecutive radio frames for a single transmission of the PBCH in each of the consecutive radio frames; when the cell is configured for repetition of the PBCH, map the transmission symbols to additional REs of each of the consecutive radio frames in accordance with a predetermined mapping for additional transmissions of the PBCH in each of the consecutive radio frames; and configure transceiver circuitry to transmit the PBCH in the REs of the consecutive radio frames, including the additional REs of the consecutive radio frames for repetition of the PBCH, wherein the predetermined mapping indicates a frame offset, a slot number and symbol number for each repetition of the PBCH in each of the consecutive radio frames, wherein when configured for time division duplexed (TDD) operation, the additional number of times is at most 5, and when configured for frequency division duplexed (FDD), the additional number of times is at most 4. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of an enhanced node B (eNB), the processing circuitry configured by the instructions to:
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encode transmission symbols with a master information block (MIB), for transmission of a physical broadcast channel (PBCH), the MIB comprising information pertaining to a cell; map the transmission symbols to resource elements (REs) of a plurality of consecutive radio frames for a single transmission of the PBCH in each of the consecutive radio frames; when the cell is configured for repetition of the PBCH, map the transmission symbols to additional REs of each of the consecutive radio frames in accordance with a predetermined mapping for additional transmissions of the PBCH in each of the consecutive radio frames; configure transceiver circuitry to transmit the PBCH in the REs of the consecutive radio frames, including the additional REs of the consecutive radio frames for repetition of the PBCH, wherein the predetermined mapping indicates a frame offset, a slot number and symbol number for each repetition of the PBCH in each of the consecutive radio frames, wherein the transmission symbols are mapped to the additional REs of each of the consecutive radio frames in accordance with the predetermined mapping to transmit the PBCH an additional number of times in each of the radio frames, and wherein when configured for time division duplexed (TDD) operation, the additional number of times is at most 5, and when configured for frequency division duplexed (FDD), the additional number of times is at most 4. - View Dependent Claims (12, 13, 14, 15)
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16. An apparatus of an enhanced node B (eNB), the apparatus comprising:
memory; and
processing circuitry, configured to;encode transmission symbols with a master information block (MIB), for transmission of a physical broadcast channel (PBCH), the MIB comprising information pertaining to a cell; map the transmission symbols to resource elements (REs) of a plurality of consecutive radio frames for a single transmission of the PBCH in each of the consecutive radio frames; map the transmission symbols to additional REs of each of the consecutive radio frames in accordance with a predetermined mapping for additional transmissions of the PBCH in each of the consecutive radio frames; configure transceiver circuitry to transmit the PBCH in the REs of the consecutive radio frames, including the additional REs of the consecutive radio frames for repetition of the PBCH; and refrain from mapping the transmission symbols for repetition of the PBCH in REs already used for transmission of cell-specific reference signals (CRS), wherein the transmission symbols are mapped to the additional REs of each of the consecutive radio frames in accordance with the predetermined mapping to transmit the PBCH an additional number of times in each of the radio frames, and wherein when configured for time division duplexed (TDD) operation, the additional number of times is at most 5, and when configured for frequency division duplexed (FDD), the additional number of times is at most 4. - View Dependent Claims (17, 18, 19)
Specification