Method and apparatus for triggering a beam state information report in a wireless communication system

Abstract

Methods and apparatuses for beam management with user equipment beam sweeping in a wireless communication system are disclosed herein. In one method, a network node transmits a reference signal for beam management within one occasion, wherein the occasion comprises at least M symbol sets. The network node performs beam sweeping for transmitting the reference signal in a first symbol set of the M symbol sets. The network node repeats the beam sweeping for transmitting the reference signal in the rest of the M symbol sets.

What is claimed is: 
     
         1 . A method of a network node, the method comprising:
 transmitting a reference signal for beam management within one occasion within a single transmission period, wherein the one occasion is smaller than the single transmission period and comprises M symbol sets;   performing beam sweeping for transmitting the reference signal in a first symbol set of the M symbol sets; and   repeating the beam sweeping for transmitting the reference signal in the rest of the M symbol sets.   
     
     
         2 . The method of  claim 1 , wherein the beam sweeping includes generating at least one beam for transmission in a first symbol of a symbol set and then switching at least one beam for transmission in a second symbol of the symbol set. 
     
     
         3 . The method of  claim 2 , further including switching at least one beam for transmission until a last symbol of the symbol set. 
     
     
         4 . The method of  claim 1 , further including receiving a report including a received power or quality of the reference signal from a User Equipment (UE). 
     
     
         5 . The method of  claim 1 , wherein a number of symbols in the M symbol sets are the same. 
     
     
         6 . The method of  claim 1 , wherein the reference signal is a periodic reference signal. 
     
     
         7 . The method of  claim 6 , wherein there is at least one occasion of the periodic reference signal every transmission period. 
     
     
         8 . The method of  claim 1 , wherein the reference signal is an aperiodic reference signal. 
     
     
         9 . The method of  claim 8 , wherein the aperiodic reference signal is triggered for UE measurement or UE detection. 
     
     
         10 . The method of  claim 1 , wherein there are multiple symbols in each of the M symbol sets and the reference signal is transmitted in all of the multiple symbols. 
     
     
         11 . A network node, comprising:
 a processor; and   a memory operatively coupled to the processor, wherein the processor is configured to execute a program code to:
 transmit a reference signal for beam management within one occasion within a single transmission period, wherein the one occasion is smaller than the single transmission period and comprises M symbol sets; 
 perform beam sweeping for transmitting the reference signal in a first symbol set of the M symbol set; and 
 repeat the beam sweeping for transmitting the reference signal in the rest of the M symbol sets. 
   
     
     
         12 . The network node of  claim 11 , wherein the beam sweeping includes generating at least one beam for transmission in a first symbol of a symbol set and then switching at least one beam for transmission in a second symbol of the symbol set. 
     
     
         13 . The network node of  claim 12 , further including switching at least one beam for transmission until a last symbol of the symbol set. 
     
     
         14 . The network node of  claim 11 , wherein the network node receives a report including a received power or quality of the reference signal from a User Equipment (UE). 
     
     
         15 . The network node of  claim 11 , wherein the number of symbols in the M symbol sets are the same. 
     
     
         16 . The network node of  claim 11 , wherein the reference signal is a periodic reference signal. 
     
     
         17 . The network node of  16 , wherein there is at least one occasion of the periodic reference signal every transmission period. 
     
     
         18 . The network node of  claim 11 , wherein the reference signal is an aperiodic reference signal. 
     
     
         19 . The network node of  claim 18 , wherein the aperiodic reference signal is triggered for UE measurement or UE detection. 
     
     
         20 . The network node of  claim 11 , wherein there are multiple symbols in each of the M symbol sets and the reference signal is transmitted in all of the multiple symbols.