Determination of enhanced physical downlink control channel candidates in a wireless communication network

摘要

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.

主权项

1. One or more non-transitory computer-readable media having instructions, stored thereon, that when executed cause an evolved Node B (eNB) to:
configure, for a user equipment (UE) of a wireless communication network, a distributed enhanced physical downlink control channel (EPDCCH)-physical resource block (PRB) set; determine a set of distributed EPDCCH candidates for the UE from the distributed EPDCCH-PRB set, wherein a set of distributed enhanced control channel elements (ECCEs) corresponding to an EPDCCH candidate m of the set of distributed EPDCCH candidates is given byL⁢{(Yp,k+⌊m·NECCE,⁢p,⁢kL·Mp(L)⌋+b)⁢mod⁢⁢⌊NECCE,⁢p,⁢k/L⌋}+i;where p is an identifier of the set of distributed EPDCCH candidates; Yp,k is a starting candidate index for the set of distributed EPDCCH candidates; L is an aggregation level of an EPDCCH to be transmitted on one of the distributed EPDCCH candidates; Mp(L) is a number of EPDCCH candidates in the set of distributed EPDCCH candidates; k is a subframe associated with the UE; NECCE,p,k is a total number of ECCEs in a control region of subframe k in the wireless communication network; i=0, . . . , L−1; m=0, 1, . . . , Mp(L)−1; and b is equal to a carrier indicator field value for a serving cell associated with the set of distributed EPDCCH candidates or 0; and
transmit an EPDCCH to the UE on one or more of the distributed EPDCCH candidates.