US2021392531A1PendingUtilityA1

Method and apparatus for estimating pathloss of pusch in a wireless communication system

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Assignee: ASUSTEK COMP INCPriority: Aug 10, 2018Filed: Aug 18, 2021Published: Dec 16, 2021
Est. expiryAug 10, 2038(~12 yrs left)· nominal 20-yr term from priority
Inventors:Chia-Chi LuKo-Chiang Lin
H04W 52/245H04W 52/146H04W 24/08H04W 52/242H04B 17/347H04W 52/16H04L 5/0048
63
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Claims

Abstract

Methods and apparatuses estimating pathloss of PUSCH in a wireless communication system are disclosed herein. In one method, the UE receives a first configuration of a first serving cell and a second serving cell, wherein the second serving cell is a pathloss reference for the first serving cell. The UE receives a second configuration of multiple downlink bandwidth parts of the second serving cell, wherein a downlink bandwidth part among the multiple downlink bandwidth parts is an active downlink bandwidth part. The UE estimates (or derives) a pathloss for an uplink transmission in an uplink bandwidth part of the first serving cell based on a reference signal in the downlink bandwidth part.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of a User Equipment (UE), the method comprising:
 receiving a first configuration of a first serving cell and a second serving cell, wherein the first serving cell is configured with a pathloss reference;   receiving a second configuration of multiple downlink (DL) bandwidth parts (BWPs) of the second serving cell, wherein a DL BWP among the multiple DL BWPs is an active DL BWP; and   estimating or deriving a pathloss for an uplink (UL) transmission in an UL BWP of the first serving cell based on a reference signal in the active DL BWP of the second serving cell, wherein the active DL BWP and the UL BWP are not linked.   
     
     
         2 . The method of  claim 1 , wherein the active DL BWP and the UL BWP have different BWP indices. 
     
     
         3 . The method of  claim 2 , wherein the BWP indices are identifiers for the BWPs provided by configurations of bwp-Id. 
     
     
         4 . The method of  claim 1 , wherein the active DL BWP and the UL BWP have different center frequencies. 
     
     
         5 . The method of  claim 1 , wherein a number of the UL BWPs configured on the first serving cell is different from a number of the multiple DL BWPs of the second serving cell. 
     
     
         6 . The method of  claim 1 , wherein the UE uses the reference signal in the active DL BWP to derive a decibel value using reference signal index q d . 
     
     
         7 . The method of  claim 1 , wherein the second serving cell is the pathloss reference for the first serving cell. 
     
     
         8 . A method of a User Equipment (UE), the method comprising:
 operating in a paired spectrum in a serving cell, wherein multiple downlink (DL) bandwidth parts (BWPs) of the serving cell are configured and a DL BWP among the multiple DL BWPs is an active DL BWP; and   estimating or deriving a pathloss for an uplink (UL) transmission in an UL BWP of the serving cell based on a reference signal in the active DL BWP, wherein the active DL BWP does not correspond to the UL BWP.   
     
     
         9 . The method of  claim 8 , wherein the active DL BWP and the UL BWP have different BWP indices. 
     
     
         10 . The method of  claim 9 , wherein the BWP indices are identifiers for the BWP provided by configurations of bwp-Id. 
     
     
         11 . The method of  claim 8 , wherein the active DL BWP and the UL BWP have different center frequencies. 
     
     
         12 . The method of  claim 8 , wherein a number of the UL BWP configured on the serving cell is different from a number of the DL BWPs of the serving cell. 
     
     
         13 . The method of  claim 8 , wherein the UE uses the reference signal in the active DL BWP to derive a decibel value using reference signal index q d . 
     
     
         14 . A User Equipment (UE), comprising:
 a memory; and   a processor operatively coupled to the memory, wherein the processor is configured to execute a program code to:
 receive a first configuration of a first serving cell and a second serving cell, wherein the first serving cell is configured with a pathloss reference; 
 receive a second configuration of multiple downlink (DL) bandwidth parts (BWPs) of the second serving cell, wherein a DL BWP among the multiple DL BWPs is an active DL BWP; and 
 estimate or derive a pathloss for an uplink (UL) transmission in an UL BWP of the first serving cell based on a reference signal in the active DL BWP of the second serving cell, wherein the active DL BWP is not linked with the UL BWP. 
   
     
     
         15 . The UE of  claim 14 , wherein the active DL BWP and the UL BWP have different BWP indices. 
     
     
         16 . The UE of  claim 15 , wherein the BWP indices are identifiers for the BWPs provided by configurations of bwp-Id. 
     
     
         17 . The UE of  claim 14 , wherein the active DL BWP and the UL BWP have different center frequencies. 
     
     
         18 . The UE of  claim 14 , wherein a number of the UL BWPs configured on the first serving cell is different from a number of the multiple DL BWPs of the second serving cell. 
     
     
         19 . The UE of  claim 14 , wherein the processor is further configured to execute the program code to:
 use the reference signal in the active DL BWP to derive a decibel value using reference signal index q d .   
     
     
         20 . The UE of  claim 14 , wherein the pathloss reference is indicated by a pathlossReferenceLinking parameter.

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