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.

What is claimed is: 
     
         1 . A method performed by a user equipment (UE), the method comprising:
 receiving first information for configuring a CORESET (control resource set); and   monitoring a PDCCH (Physical Downlink Control Channel) in the CORESET, wherein the CORESET corresponds to a plurality of CCEs (Control Channel Elements), wherein:
 each of the plurality of CCEs corresponds to one REG (Resource Element Group) bundle, wherein a number of REGs in the REG bundle is 6, wherein each of the 6 REGs equals one resource block during one OFDM (Orthogonal Frequency Division Multiplexing) symbol, 
 a value of an index of each of the plurality of CCEs is equal to a value of an index of the REG bundle to which said each of the plurality of CCEs corresponds, and 
 the index of each of the plurality of CCEs is consecutively numbered in integers of increasing order in frequency domain, within the CORESET. 
   
     
     
         2 . The method of  claim 1 , wherein a continuous time duration of the CORESET in number of OFDM symbols is one of 1, 2, and 3. 
     
     
         3 . The method of  claim 2 , wherein a number of OFDM symbols of the REG bundle is equal to the number of the OFDM symbols of the continuous time duration of the CORESET. 
     
     
         4 . The method of  claim 2 , wherein the first information indicates the continuous time duration of the CORESET. 
     
     
         5 . The method of  claim 1 , wherein the first information indicates a frequency domain configuration of the CORESET. 
     
     
         6 . A user equipment (UE) comprising:
 a transceiver configured to receive first information for configuring a CORESET (control resource set); and   a controller configured to monitor a PDCCH (Physical Downlink Control Channel) in the CORESET, wherein the CORESET corresponds to a plurality of CCEs (Control Channel Elements), wherein:
 each of the plurality of CCEs corresponds to one REG (Resource Element Group) bundle, wherein a number of REGs in the REG bundle is 6, wherein each of the 6 REGs equals one resource block during one OFDM (Orthogonal Frequency Division Multiplexing) symbol, 
 a value of an index of each of the plurality of CCEs is equal to a value of an index of the REG bundle to which said each of the plurality of CCEs corresponds, and 
 the index of each of the plurality of CCEs is consecutively numbered in integers of increasing order in frequency domain, within the CORESET. 
   
     
     
         7 . The UE of  claim 6 , wherein a continuous time duration of the CORESET in number of OFDM symbols is one of 1, 2, and 3. 
     
     
         8 . The UE of  claim 7 , wherein a number of OFDM symbols of the REG bundle is equal to the number of the OFDM symbols of the continuous time duration of the CORESET. 
     
     
         9 . The UE of  claim 7 , wherein the first information indicates the continuous time duration of the CORESET. 
     
     
         10 . The UE of  claim 6 , wherein the first information indicates a frequency domain configuration of the CORESET. 
     
     
         11 . A method performed by a base station, the method comprising:
 transmitting first information for configuring a CORESET (control resource set); and   transmitting a PDCCH (Physical Downlink Control Channel) in the CORESET, the CORESET corresponding to a plurality of CCEs (Control Channel Elements), wherein:
 each of the plurality of CCEs corresponds to one REG (Resource Element Group) bundle, wherein a number of REGs in the REG bundle is 6, wherein each of the 6 REGs equals one resource block during one OFDM (Orthogonal Frequency Division Multiplexing) symbol, 
 a value of an index of each of the plurality of CCEs is equal to a value of an index the REG bundle to which said each of the plurality of CCEs corresponds, and 
 the index of each of the plurality of CCEs is consecutively numbered in integers of increasing order in frequency domain, within the CORESET. 
   
     
     
         12 . The method of  claim 11 , wherein a continuous time duration of the CORESET in number of OFDM symbols is one of 1, 2, and 3. 
     
     
         13 . The method of  claim 12 , wherein a number of OFDM symbols of the REG bundle is equal to the number of the OFDM symbols of the continuous time duration of the CORESET. 
     
     
         14 . The method of  claim 12 , wherein the first information indicates the continuous time duration of the CORESET. 
     
     
         15 . The method of  claim 11 , wherein the first information indicates a frequency domain configuration of the CORESET.