Determination of enhanced physical downlink control channel candidates in a wireless communication network
First Claim
1. An apparatus to be employed by an evolved Node B (eNB), the apparatus comprising:
- communications circuitry to communicate with a user equipment (UE) over a wireless communication network; and
control circuitry, coupled to the communications circuitry, to;
configure, for the UE, a first enhanced physical downlink control channel (EPDCCH)-physical resource block (PRB) set including a plurality of PRB-pairs, wherein the first EPDCCH-PRB set is configured as a distributed EPDCCH-PRB set having distributed enhanced control channel elements (ECCEs) that include enhanced resource element groups (EREGs) spread among the plurality of PRB-pairs; and
determine, based on a search space equation, a set of distributed EPDCCH candidates for the UE from the PRB-pairs of the first EPDCCH-PRB set, wherein the individual distributed EPDCCH candidates include one or more of the distributed ECCEs, and wherein the different distributed EPDCCH candidates of the set of distributed EPDCCH candidates are first mapped to distributed ECCEs including EREGs of different localized ECCEs of the PRB-pairs, and then mapped to distributed ECCEs including EREGs of a same localized ECCE as another distributed EPDCCH candidate;
configure, for the UE or another UE, a second EPDCCH-PRB set including a plurality of PRB-pairs that are fully overlapped, partially overlapped, or fully non-overlapped with the PRB-pairs of the first EPDCCH-PRB set, wherein the second EPDCCH-PRB set is configured as a localized EPDCCH-PRB set including a plurality of localized ECCEs having EREGs of a same PRB-pair; and
determine, based on the search space equation, a set of localized EPDCCH candidates for the UE or the another UE from the second EPDCCH-PRB set.
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Accused Products
Abstract
In embodiments, an evolved Node B (eNB) of a wireless communication network may configure an enhanced physical downlink control channel (EPDCCH) physical resource block (PRB) set for a user equipment (UE). The EPDCCH-PRB set may include a plurality of PRB-pairs. The EPDCCH-PRB set may further include a plurality of enhanced resource element groups (EREGs) organized into localized enhanced control channel elements (ECCEs) having EREGs of the same PRB-pair and distributed ECCEs having EREGs of different PRB-pairs. In some embodiments, the eNB may determine a set of distributed EPDCCH candidates for the UE from the EPDCCH-PRB set, wherein the individual distributed EPDCCH candidates include one or more of the distributed ECCEs, and wherein the set of distributed EPDCCH candidates includes at least one EREG from each of the plurality of localized ECCEs. Other embodiments may be described and claimed.
16 Citations
21 Claims
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1. An apparatus to be employed by an evolved Node B (eNB), the apparatus comprising:
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communications circuitry to communicate with a user equipment (UE) over a wireless communication network; and control circuitry, coupled to the communications circuitry, to; configure, for the UE, a first enhanced physical downlink control channel (EPDCCH)-physical resource block (PRB) set including a plurality of PRB-pairs, wherein the first EPDCCH-PRB set is configured as a distributed EPDCCH-PRB set having distributed enhanced control channel elements (ECCEs) that include enhanced resource element groups (EREGs) spread among the plurality of PRB-pairs; and determine, based on a search space equation, a set of distributed EPDCCH candidates for the UE from the PRB-pairs of the first EPDCCH-PRB set, wherein the individual distributed EPDCCH candidates include one or more of the distributed ECCEs, and wherein the different distributed EPDCCH candidates of the set of distributed EPDCCH candidates are first mapped to distributed ECCEs including EREGs of different localized ECCEs of the PRB-pairs, and then mapped to distributed ECCEs including EREGs of a same localized ECCE as another distributed EPDCCH candidate; configure, for the UE or another UE, a second EPDCCH-PRB set including a plurality of PRB-pairs that are fully overlapped, partially overlapped, or fully non-overlapped with the PRB-pairs of the first EPDCCH-PRB set, wherein the second EPDCCH-PRB set is configured as a localized EPDCCH-PRB set including a plurality of localized ECCEs having EREGs of a same PRB-pair; and determine, based on the search space equation, a set of localized EPDCCH candidates for the UE or the another UE from the second EPDCCH-PRB set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus to be employed by an evolved Node B (eNB), the apparatus comprising:
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communications circuitry to communicate with a user equipment (UE) over a wireless communication network; and control circuitry, coupled to the communications circuitry, to; configure, for one or more UEs, a localized enhanced physical downlink control channel (EPDCCH)-physical resource block (PRB) set having a plurality of localized enhanced control channel elements (ECCEs), and a distributed EPDCCH-PRB set having a plurality of distributed ECCEs; and determine, based on a search space equation, a set of localized EPDCCH candidates, wherein the individual localized EPDCCH candidates correspond to one or more localized ECCEs of the localized EPDCCH-PRB set; and determine, based on the search space equation, a set of distributed EPDCCH candidates, wherein the individual distributed EPDCCH candidates correspond to one or more of the distributed ECCEs of the distributed EPDCCH-PRB set, and wherein the different distributed EPDCCH candidates of the set of distributed EPDCCH candidates are first mapped to distributed ECCEs including EREGs of different localized ECCEs of the PRB-pairs, and then mapped to distributed ECCEs including EREGs of a same localized ECCE as another distributed EPDCCH candidate. - View Dependent Claims (11, 12, 13, 14)
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15. An apparatus to be employed by a user equipment (UE), the apparatus comprising:
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communications circuitry configured to communicate with an evolved Node B (eNB) over a wireless communication network; and decoding circuitry configured to decode an enhanced physical downlink control channel (EPDCCH) received at one or more of a plurality of EPDCCH candidates of a first set of EPDCCH candidates and a second set of EPDCCH candidates associated with a same subframe; wherein the first set of EPDCCH candidates is determined using enhanced control channel elements (ECCEs) that are selected from a first EPDCCH-physical resource block (PRB) set, using a search space equation and based on a first starting candidate index, and the second set of EPDCCH candidates is determined using ECCEs that are selected from a second EPDCCH-PRB set, using the search space equation and based on a second starting candidate index that is different from the first starting candidate index; wherein the first EPDCCH-PRB set is configured as a distributed EPDCCH-PRB set having distributed enhanced control channel elements (ECCEs) that include enhanced resource element groups (EREGs) spread among the plurality of PRB-pairs; wherein individual EPDCCH candidates of the first set of EPDCCH candidates include one or more of the distributed ECCEs, and wherein the different EPDCCH candidates of the first set of EPDCCH candidates are first mapped to distributed ECCEs including EREGs of different localized ECCEs of the PRB-pairs, and then mapped to distributed ECCEs including EREGs of a same localized ECCE as another EPDCCH candidate of the first set of EPDCCH candidates; wherein the second EPDCCH-PRB set is configured as a localized EPDCCH-PRB set including a plurality of localized ECCEs having EREGs of a same PRB-pair; and wherein individual EPDCCH candidates of the second set of EPDCCH candidates include one or more localized ECCEs of the second EPDCCH-PRB set. - View Dependent Claims (16, 17)
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18. An apparatus to be employed by a user equipment (UE), the apparatus comprising:
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communications circuitry to communicate with a user equipment (UE) over a wireless communication network; and decoding circuitry, coupled to the communications circuitry, to; receive configuration parameters from an evolved Node B (eNB) for a first enhanced physical downlink control channel (EPDCCH)-physical resource block (PRB) set including a plurality of PRB-pairs, wherein the first EPDCCH-PRB set is configured as a distributed EPDCCH-PRB set having distributed enhanced control channel elements (ECCEs) that include enhanced resource element groups (EREGs) spread among the plurality of PRB-pairs; determine, based on a search space equation, a set of distributed EPDCCH candidates from the PRB-pairs of the first EPDCCH-PRB set, wherein the individual distributed EPDCCH candidates include one or more of the distributed ECCEs, and wherein the different distributed EPDCCH candidates of the set of distributed EPDCCH candidates are first mapped to distributed ECCEs including EREGs of different localized ECCEs of the PRB-pairs, and then mapped to distributed ECCEs including EREGs of a same localized ECCE as another distributed EPDCCH candidate; receive configuration parameters for a second EPDCCH-PRB set including a plurality of PRB-pairs that are fully overlapped, partially overlapped, or fully non-overlapped with the PRB-pairs of the first EPDCCH-PRB set, wherein the second EPDCCH-PRB set is configured as a localized EPDCCH-PRB set including a plurality of localized ECCEs having EREGs of a same PRB-pair; and determine, based on the search space equation, a set of localized EPDCCH candidates for the UE or the another UE from the second EPDCCH-PRB set. - View Dependent Claims (19, 20, 21)
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Specification