Short physical downlink control channel (SPDCCH) mapping design
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJohn Camilo Solano Arenas, Niklas Andgart, Laetitia Falconetti
Life of this patent
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Abstract
A method, network node and wireless device for receiving and/or mapping a physical downlink control channel, PDCCH, to resource elements of a time-frequency grid are provided in which the PDCCH is mapped to resource elements of the time-frequency grid by configuring resource element groups, REGs, each REG spanning one orthogonal frequency division multiplex, OFDM, symbol, and the PDCCH being at least two OFDM symbols. In accordance with one embodiment, the method includes receiving the PDCCH from the network node on one of a plurality of sets of physical resource blocks, PRBs.
Claims16
A method in a wireless device for receiving information on a physical downlink control channel, PDCCH, signaled by a network node, the PDCCH being mapped to resource element groups, REGs, each REG spanning only one orthogonal frequency division multiplex, OFDM, symbol, the PDCCH comprising at least one control-channel element, CCE, a CCE to REG mapping being one of localized in a frequency domain and distributed in the frequency domain, the method comprising:
- receiving the PDCCH from the network node, the PDCCH being two or more OFDM symbols;
- and
- for the CCE to REG mapping distributed in the frequency domain, the REGs being distributed in groups of REGs, each group of REGs being mapped to consecutive physical resource blocks, PRBs, a REG consisting of 1 PRB within 1 OFDM symbol.
A wireless device for receiving information on a physical downlink control channel, PDCCH, signaled by a network node, the PDCCH being mapped to resource element groups, REGs, each REG spanning only one orthogonal frequency division multiplex, OFDM, symbol, the PDCCH comprising at least one control-channel element, CCE, a CCE to REG mapping being one of localized in a frequency domain and distributed in the frequency domain, the wireless device comprising:
- a transceiver configured to receive the PDCCH from the network node, the PDCCH being two or more OFDM symbols;
- and
- for the CCE to REG mapping distributed in the frequency domain, the REGs being distributed in groups of REGs, each group of REGs being mapped to consecutive physical resource blocks, PRBs, a REG consisting of 1 PRB within 1 OFDM symbol.
A method in a network node, the method comprising:
- mapping a physical downlink control channel, PDCCH, to resource elements groups, REGs, each REG spanning only one orthogonal frequency division multiplexing, OFDM, symbol, the PDCCH comprising at least one control-channel element, CCE, a CCE to REG mapping being one of localized in a frequency domain and distributed in the frequency domain;
- transmitting the PDCCH from the network node, for the CCE to REG mapping distributed in the frequency domain, the REGs being distributed in groups of REGs, each group of REGs being mapped to consecutive physical resource blocks, PRBs, a REG consisting of 1 PRB within 1 orthogonal frequency division multiplex, OFDM, symbol, the PDCCH being two or more OFDM symbols.
A network node, the network node comprising:
- processing circuitry configured to:
- map a physical downlink control channel, PDCCH, to resource elements groups, REGs, each REG spanning only one orthogonal frequency division multiplexing, OFDM, symbol, the PDCCH comprising at least one control-channel element, CCE, a CCE to REG mapping being one of localized in a frequency domain and distributed in the frequency domain;
- cause transmission of the PDCCH from the network node, for the CCE to REG mapping distributed in the frequency domain, the REGs being distributed in groups of REGs, each group of REGs being mapped to consecutive physical resource blocks, PRBs, a REG consisting of 1 PRB within 1 orthogonal frequency division multiplex, OFDM, symbol, the PDCCH being two or more OFDM symbols.
Dependencies are inferred from the claim text.