Method and Apparatus for Downlink Control Information Communication and Interpretation
AssigneeHuawei Technologies Co., Ltd.
InventorsJavad Abdoli, Zhenfei Tang
Life of this patent
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Abstract
Methods and apparatus are provided for wireless communication in which a downlink control information (DCI) is transmitted in a physical downlink control channel (PDCCH) in a first bandwidth part (BWP). A UE is responsible for determining a starting resource block (RB) for a data transmission allocated by the DCI based on a value of a frequency domain resource allocation field in the DCI, a reference RB, and a reference size of a second BWP. The data transmission can then be transmitted, in the case of, for example, PUSCH, by a UE or received, in the case of, for example, PDSCH.
Claims20
A method for wireless communication, the method comprising:
- transmitting or receiving, by an apparatus, a downlink control information (DCI) in a second control resource set (CORESET) in an active downlink (DL) bandwidth part (BWP) within a carrier, the DCI comprising a frequency domain resource allocation field for indicating frequency resources allocated to a data transmission within the active DL BWP;
- and
- transmitting or receiving, by the apparatus, the data transmission in a frequency resource in the active DL BWP, the frequency resource based on:
- a starting physical resource block (PRB) for the data transmission and a length of contiguously allocated resource blocks (RBs) for the data transmission, wherein the starting PRB for the data transmission is based on:
- a value of the frequency domain resource allocation field, a number of RBs of a first CORESET, and a reference RB defined by a lowest-numbered PRB in the second CORESET.
An apparatus comprising:
- at least one processor;
- and
- a non-transitory computer-readable medium having stored thereon computer-executable instructions, that when executed by the at least one processor, cause the apparatus to:
- transmit or receive a downlink control information (DCI) in a second control resource set (CORESET) in an active downlink (DL) bandwidth part (BWP) within a carrier, the DCI comprising a frequency domain resource allocation field for indicating frequency resources allocated to a data transmission within the active DL BWP;
- and
- transmit or receive the data transmission in a frequency resource in the active DL BWP, the frequency resource based on:
- a starting physical resource block (PRB) for the data transmission and a length of contiguously allocated resource blocks (RBs) for the data transmission, wherein the starting PRB for the data transmission is based on:
- a value of the frequency domain resource allocation field, a number of RBs of a first CORESET, and a reference RB defined by a lowest-numbered PRB in the second CORESET.
The method of claim 8, wherein:
- n+nCORESETstartnCORESETstartnCORESETstart the DCI is a fallback DCI for the data transmission with a non-interleaved virtual resource block (VRB)-to-PRB mapping,
- n+nCORESETstartnCORESETstartnCORESETstart the fallback DCI is decoded in a common search space, and
- n+nCORESETstartnCORESETstartnCORESETstart for the data transmission, a virtual RB n is mapped to a PRB,
- where a PRB is the lowest-numbered PRB in the CORESET where the fallback DCI has been decoded by the apparatus, and wherein
- n+nCORESETstartnCORESETstartnCORESETstart the second CORESET is the CORESET where the fallback DCI has been decoded by the apparatus and the reference RB is.
A non-transitory computer-readable medium having stored thereon computer-executable instructions, that when executed, cause an apparatus to:
- transmit or receive a downlink control information (DCI) in a second control resource set (CORESET) in an active downlink (DL) bandwidth part (BWP) within a carrier, the DCI comprising a frequency domain resource allocation field for indicating frequency resources allocated to a data transmission within the active DL BWP;
- and
- transmit or receive the data transmission in a frequency resource in the active DL BWP, the frequency resource based on:
- a starting physical resource block (PRB) for the data transmission and a length of contiguously allocated resource blocks (RBs) for the data transmission, wherein the starting PRB for the data transmission is based on:
- a value of the frequency domain resource allocation field, a number of RBs of a first CORESET, and a reference RB defined by a lowest-numbered PRB in the second CORESET.
The method of claim 15, wherein:
- the active DL BWP comprises a distribution of RBs for the data transmission based on an interleave mapping of continuous bundles of VRBs to interleaved bundles of PRBs, and the starting PRB for the data transmission is further based on:
- the interleave mapping and a reference bundle of PRBs in the second CORESET, the reference bundle of PRBs comprising the reference RB.
Dependencies are inferred from the claim text.