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US 11,539,488 B2Granted
Control element resource mapping schemes in wireless systems
AssigneeQUALCOMM Incorporated
InventorsSeyedkianoush Hosseini, Amir Farajidana
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Abstract
Methods, systems, and devices for wireless communications are described. A base station may transmit control information to a UE in a shortened physical downlink control channel (sPDCCH). The sPDCCH may be included in shortened resource element groups (sREGs) of shortened channel control elements (sCCEs), which may be indexed in resource block (RB) sets by using localized or distributed mapping schemes. Updated sREG mapping schemes may result in a uniform distribution of sREGs within available symbols (and, as a result, a uniform distribution of unused resource blocks within the available symbols) and may ensure that sREGs within an sCCE are indexed into only one symbol.
Claims30
A method for wireless communications, comprising:
- identifying a resource set for transmission of a set of control channel elements (CCEs) to at least one user equipment (UE), wherein the resource set comprises multiple resource element groups (REGs) associated with respective CCEs and multiple symbols, wherein a REG of the multiple REGs spans, in the time domain, a respective single symbol of the multiple symbols;
- determining a mapping scheme for mapping REGs of the resource set to CCEs of the set of CCEs based at least in part on a number of REGs in a respective symbol of the multiple symbols of the resource set and whether the number of REGs in the respective symbol is an odd number, wherein the number of REGs in the respective symbol is greater than a number of REGs in a CCE within the respective symbol of the set of CCEs;
- mapping REGs to each CCE of the set of CCEs based at least in part on the mapping scheme;
- and
- transmitting the mapped REGs to the at least one UE.
2 more elements
A method for wireless communications, comprising:
- receiving, from a network device, a resource set configuration that identifies a resource set for one or more control channel elements (CCEs), wherein the resource set comprises multiple resource element groups (REGs) associated with respective CCEs and multiple symbols wherein a REG of the multiple REGs spans, in the time domain, a respective single symbol of the multiple symbols;
- determining a mapping scheme for mapping REGs of the resource set to the one or more CCEs based at least in part on the resource set configuration and a number of REGs in a respective symbol of the multiple symbols of the resource set, including whether the number of REGs in the respective symbol of the multiple symbols of the resource set is an odd number, wherein the number of REGs in the respective symbol is greater than a number of REGs in a CCE within the respective symbol of the one or more CCEs;
- monitoring the resource set for at least one of the one or more CCEs based at least in part on the mapping scheme;
- and
- decoding the at least one CCE based at least in part on the monitoring.
2 more elements
An apparatus for wireless communications, comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory and executable by the processor to cause the apparatus to:
- identify a resource set for transmission of a set of control channel elements (CCEs) to at least one user equipment (UE), wherein the resource set comprises multiple resource element groups (REGs) associated with respective CCEs and multiple symbols wherein a REG of the multiple REGs spans, in the time domain, a respective single symbol of the multiple symbols;
- determine a mapping scheme for mapping REGs of the resource set to CCEs of the set of CCEs based at least in part on a number of REGs in a respective symbol of the multiple symbols of the resource set and whether the number of REGs in the respective symbol is an odd number, wherein the number of REGs in the respective symbol is greater than a number of REGs in a CCE within the respective symbol of the set of CCEs;
- map REGs to each CCE of the set of CCEs based at least in part on the mapping scheme;
- and
- transmit the mapped REGs to the at least one UE.
6 more elements
An apparatus for wireless communications, comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory and executable by the processor to cause the apparatus to:
- receive, from a network device, a resource set configuration that identifies a resource set for one or more control channel elements (CCEs), wherein the resource set comprises multiple resource element groups (REGs) associated with respective CCEs and multiple symbols, wherein a REG of the multiple REGs spans, in the time domain, a respective single symbol of the multiple symbols;
- determine a mapping scheme for mapping REGs of the resource set to the one or more CCEs based at least in part on the resource set configuration and a number of REGs in a respective symbol of the multiple symbols of the resource set, including whether the number of REGs in the respective symbol of the multiple symbols of the resource set is an odd number, wherein the number of REGs in the respective symbol is greater than a number of REGs in a CCE within the respective symbol of the one or more CCEs;
- monitor the resource set for at least one of the one or more CCEs based at least in part on the mapping scheme;
- and
- decode the at least one CCE based at least in part on the monitoring.
6 more elements
Dependencies are inferred from the claim text.