Methods and apparatuses for control resource mapping

Abstract

Embodiments of the present disclosure relate to methods and apparatuses for control resource mapping. In example embodiments, a method implemented in a communication device is provided. According to the method, REG indices for a plurality of REGs are obtained in a control channel region. The REG bundle indices are determined based on the REG indices and a pattern of REG bundle. The pattern of REG bundle indicates the number of REGs in the frequency domain and the number of OFDM symbols in the time domain. CCE indices are determined based on the determined REG bundle indices and the number of CCEs in the control channel region. The CCE indices are continuous with respect to the REG bundle in the frequency domain.

1 .- 21 . (canceled) 
     
     
         22 . A method comprising:
 receiving, by a user equipment (UE), configuration information of a control resource set (CORESET); and   monitoring, by the UE, a Physical Downlink Control Channel (PDCCH) in the CORESET,   wherein the PDCCH is transmitted using at least one Control Channel Element (CCE) comprising at least one Resource Element Group (REG) bundle,   wherein a size of each of the at least one REG bundle is a number of a plurality of REGs,   wherein each of the plurality of REGs equals one resource block during one Orthogonal Frequency Division Multiplexing (OFDM)) symbol,   wherein, if the size of each of the at least one REG bundle is 6, then the at least one CCE is indexed equal to a respective index of each of the at least one REG bundle, and   wherein the respective index of each of the at least one REG bundle is numbered in integers in increasing order in a frequency domain within the CORESET.   
     
     
         23 . The method of  claim 22 , wherein a continuous time duration of the CORESET, in a number of OFDM symbols, is one of 1, 2, and 3. 
     
     
         24 . The method of  claim 23 , wherein a number of OFDM symbols of each of the at least one REG bundle is equal to the number of OFDM symbols of the continuous time duration of the CORESET. 
     
     
         25 . The method of  claim 22 , wherein the configuration information indicates a continuous time duration of the CORESET. 
     
     
         26 . The method of  claim 22 , wherein the configuration information indicates a frequency domain configuration of the CORESET. 
     
     
         27 . A method comprising:
 transmitting, by a base station, configuration information of a control resource set (CORESET); and   transmitting, by the base station, a Physical Downlink Control Channel (PDCCH) in the CORESET, using at least one Control Channel Element (CCE) comprising at least one Resource Element Group (REG) bundle,   wherein a size of each of the at least one REG bundle is a number of a plurality of REGs,   wherein each of the plurality of REGs equals one resource block during one Orthogonal Frequency Division Multiplexing (OFDM) symbol,   wherein, if the size of each of the at least one REG bundle is 6, then the at least one CCE is indexed equal to a respective index of each of the at least one REG bundle, and   wherein the respective index of each of the at least one REG bundle is numbered in integers in increasing order in a frequency domain within the CORESET.   
     
     
         28 . A base station comprising:
 a transmitter is configured to:
 transmit configuration information of a control resource set (CORESET); and 
 transmit a Physical Downlink Control Channel (PDCCH) in the CORESET, using at least one Control Channel Element (CCE) comprising at least one Resource Element Group (REG) bundle, 
   wherein a size of each of the at least one REG bundle is a number of a plurality of REGs,   wherein each of the plurality of REGs equals one resource block during one Orthogonal Frequency Division Multiplexing (OFDM) symbol,   wherein, if the size of each of the at least one REG bundle is 6, then the at least one CCE is indexed equal to a respective index of each of the at least one REG bundle, and   wherein the respective index of each of the at least one REG bundle is numbered in integers in increasing order in a frequency domain within the CORESET.