Physical downlink shared channel (PDSCH) protection
AssigneeQUALCOMM Incorporated
InventorsTaesang Yoo, Tao Luo, Yongbin Wei, Durga Prasad Malladi
Life of this patent
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Abstract
According to certain aspects, resource blocks used for physical downlink shared channel (PDSCH) transmissions may be allocated in a manner to manage interference in neighboring cells. According to certain aspects, one or more guard RBs may be utilized when transmitting PDSCH in a first cell an effort to reduce interference by transmissions in a second cell.
Claims30
A method for wireless communication in a wireless communications network in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the method comprising:
- identifying, by the first base station, a set of RBs for transmitting a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs;
- identifying one or more guard RBs surrounding the identified set of RBs;
- and
- transmitting the PDSCH using the identified RBs with limited or no transmissions by either the first or second base stations in the guard RBs;
- wherein:
- the identified set of RBs are a distributed resource allocation;
- and
- the guard RBs comprise one or more RBs on each side of one or more different portions of the identified set of RBs.
A method for wireless communication in a system in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the method comprising:
- receiving, from the first base station, a set of RBs allocated for a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs;
- and
- decoding the PDSCH using only a subset of the set of RBs allocated for the PDSCH, wherein the subset does not include one or more RBs at either edge of the set of RBs allocated for the PDSCH;
- wherein decoding the PDSCH using only a subset of the set of RBs allocated for the PDSCH comprises puncturing logarithmic likelihood ratios (LLRs) for the one or more RBs at either edge of the set of RBs allocated for the PDSCH.
An apparatus for wireless communication in a wireless communications network in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the apparatus comprising:
- means for identifying a set of RBs for transmitting a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs;
- means for identifying one or more guard RBs surrounding the identified set of RBs;
- and
- means for transmitting the PDSCH using the identified RBs with limited or no transmissions by either the first or second base stations in the guard RBs;
- wherein:
- the identified set of RBs are a distributed resource allocation;
- and
- the guard RBs comprise one or more RBs on each side of one or more different portions of the identified set of RBs.
An apparatus for wireless communication in a system in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the apparatus comprising:
- means for receiving, from the first base station, a set of RBs allocated for a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs;
- and
- means for decoding the PDSCH using only a subset of the set of RBs allocated for the PDSCH, wherein the subset does not include one or more RBs at either edge of the set of RBs allocated for the PDSCH;
- wherein decoding the PDSCH using only a subset of the set of RBs allocated for the PDSCH comprises puncturing logarithmic likelihood ratios (LLRs) for the one or more RBs at either edge of the set of RBs allocated for the PDSCH.
An apparatus for wireless communication in a wireless communications network in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the apparatus comprising:
- at least one processor configured to identify a set of RBs for transmitting a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs, identify one or more guard RBs surrounding the identified set of RB, and transmit the PDSCH using the identified RBs with limited or no transmissions by either the first or second base stations in the guard RBs;
- and
- a memory coupled with the at least one processor;
- wherein:
- the identified set of RBs are a distributed resource allocation;
- and
- the guard RBs comprise one or more RBs on each side of one or more different portions of the identified set of RBs.
An apparatus for wireless communication in a system in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the apparatus comprising:
- at least one processor configured to receive, from the first base station, a set of RBs allocated for a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs and decode the PDSCH using only a subset of the set of RBs allocated for the PDSCH, wherein the subset does not include one or more RBs at either edge of the set of RBs allocated for the PDSCH;
- and
- a memory coupled with the at least one processor;
- wherein decode the PDSCH using only a subset of the set of RBs allocated for the PDSCH comprises puncture logarithmic likelihood ratios (LLRs) for the one or more RBs at either edge of the set of RBs allocated for the PDSCH.
A computer program product comprising a non-transitory computer readable medium having instructions stored thereon for wireless communication in a wireless communications network in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the instructions executable by one or more processors for:
- identifying a set of RBs for transmitting a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs;
- identifying one or more guard RBs surrounding the identified set of RBs;
- and
- transmitting the PDSCH using the identified RBs with limited or no transmissions by either the first or second base stations in the guard RBs;
- wherein:
- the identified set of RBs are a distributed resource allocation;
- and
- the guard RBs comprise one or more RBs on each side of one or more different portions of the identified set of RBs.
A computer program product comprising a non-transitory computer readable medium having instructions stored thereon for wireless communication in a wireless communications network in which at least a first base station of a first cell and a second base station of a second cell share resource blocks (RBs) via a frequency division multiplexing (FDM) scheme, the instructions executable by one or more processors for:
- receiving, from the first base station, a set of RBs allocated for a physical downlink shared channel (PDSCH), wherein the second base station is scheduled to limit transmissions using the identified set of RBs;
- and
- decoding the PDSCH using only a subset of the set of RBs allocated for the PDSCH, wherein the subset does not include one or more RBs at either edge of the set of RBs allocated for the PDSCH;
- wherein decoding the PDSCH using only a subset of the set of RBs allocated for the PDSCH comprises puncturing logarithmic likelihood ratios (LLRs) for the one or more RBs at either edge of the set of RBs allocated for the PDSCH.
Dependencies are inferred from the claim text.