US2016308713A1PendingUtilityA1

Method for generating a mac control element in a carrier aggregation system and a device therefor

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Assignee: LG ELECTRONICS INCPriority: Apr 15, 2015Filed: Apr 14, 2016Published: Oct 20, 2016
Est. expiryApr 15, 2035(~8.7 yrs left)· nominal 20-yr term from priority
Inventors:Seungjune YiSunyoung Lee
H04W 72/21H04W 72/20H04L 61/6022H04W 88/02H04W 72/0413H04L 41/0803H04W 52/365H04W 24/02H04L 2101/622H04W 88/08
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Claims

Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for generating a MAC CE in a carrier aggregation system, the method comprising: configuring a plurality of serving cells, wherein each of the plurality of serving cells respectively corresponds to a cell index; determining whether a Medium Access Control (MAC) Control Element (CE) includes four octets for a cell index field depending on a highest cell index among the cell indexes of the plurality of serving cells; and generating the MAC CE according to the determining.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for a communication apparatus operating in a wireless communication system, the method comprising:
 configuring a plurality of serving cells, wherein each of the plurality of serving cells respectively corresponds to a cell index;   determining whether a Medium Access Control (MAC) Control Element (CE) includes four octets for a cell index field depending on a highest cell index among the cell indexes of the plurality of serving cells; and   generating the MAC CE according to the determining.   
     
     
         2 . The method according to  claim 1 , wherein if the highest cell index is less than 8, the MAC CE includes one octet for a cell index field. 
     
     
         3 . The method according to  claim 1 , wherein if the highest cell index is not less than 8, the MAC CE includes four octets for a cell index field. 
     
     
         4 . The method according to  claim 1 , wherein the cell index is a SCellIndex or a ServCelllndex. 
     
     
         5 . The method according to  claim 1 , wherein if the MAC CE is an Activation/Deactivation MAC control element, a cell index field_i indicates activation/deactivation status of a serving cell with SCellIndex_i. 
     
     
         6 . The method according to  claim 5 , wherein the Activation/Deactivation MAC control element includes the four octets for the cell index field is identified by a MAC Protocol Data Unit (PDU) subheader with Logical Channel Identifier (LCID). 
     
     
         7 . The method according to  claim 1 , wherein if the MAC CE is an Extended Power Headroom Report (PHR) MAC CE, a cell index field_i indicates presence of a Power Headroom (PH) field for a serving cell with ServCelllndex_i. 
     
     
         8 . The method according to  claim 7 , wherein the plurality of serving cells are configured with an uplink. 
     
     
         9 . A method for a communication apparatus operating in a wireless communication system, the method comprising:
 configuring a plurality of serving cells, wherein each of the plurality of serving cells corresponds to a respective cell index;   determining a size of a cell index field in a Medium Access Control (MAC) Control Element (CE) depending on a highest cell index among the plurality of serving cells; and   generating the MAC CE according to the size of the cell index field.   
     
     
         10 . The method according to  claim 9 , wherein the UE determines that the size of the cell index field is 1 byte if 0≦ the highest cell index ≦7, and
 the UE determines that the size of the cell index field is 2 bytes if 8≦ the highest cell index ≦15, and 
 the UE determines that the size of the cell index field is 3 bytes if 16≦ the highest cell index ≦23, and 
 the UE determines that the size of the cell index field is 4 bytes if 24≦ the highest cell index ≦31. 
 
     
     
         11 . A User Equipment (UE) operating in a wireless communication system, the UE comprising:
 a Radio Frequency (RF) module; and   a processor configured to:   configure a plurality of serving cells, wherein each of the plurality of serving cells respectively corresponds to a cell index;   determine whether a Medium Access Control (MAC) Control Element (CE) includes four octets for a cell index field depending on a highest cell index among the cell indexes of the plurality of serving cells; and   generate the MAC CE according to the determining.   
     
     
         12 . The UE according to  claim 11 , wherein if the highest cell index is less than 8, the MAC CE includes one octet for a cell index field. 
     
     
         13 . The UE according to  claim 11 , wherein if the highest cell index is not less than 8, the MAC CE includes four octets for a cell index field. 
     
     
         14 . The UE according to  claim 11 , wherein the cell index is a SCellIndex or a ServCelllndex. 
     
     
         15 . The UE according to  claim 11 , wherein if the MAC CE is an Activation/Deactivation MAC control element, a cell index field_i indicates activation/deactivation status of a serving cell with SCellIndex_i. 
     
     
         16 . The UE according to  claim 15 , wherein the Activation/Deactivation MAC control element includes the four octets for the cell index field is identified by a MAC Protocol Data Unit (PDU) subheader with Logical Channel Identifier (LCID). 
     
     
         17 . The UE according to  claim 11 , wherein if the MAC CE is an Extended Power Headroom Report (PHR) MAC CE, a cell index field_i indicates presence of a Power Headroom (PH) field for a serving cell with ServCelllndex_i. 
     
     
         18 . The UE according to  claim 17 , wherein the plurality of serving cells are configured with an uplink. 
     
     
         19 . A User Equipment (UE) operating in a wireless communication system, the UE comprising:
 a Radio Frequency (RF) module; and   a processor configured to:   configure a plurality of serving cells, wherein each of the plurality of serving cells corresponds to a respective cell index;   determine a size of a cell index field in a Medium Access Control (MAC) Control Element (CE) depending on a highest cell index among the plurality of serving cells; and   generate the MAC CE according to the size of a cell index field.   
     
     
         20 . The UE according to  claim 19 , wherein the processor determines that the size of the cell index field is 1 byte if 0≦ the highest cell index ≦7, and
 the processor determines that the size of the cell index field is 2 bytes if 8≦ the highest cell index ≦15, and 
 the processor determines that the size of the cell index field is 3 bytes if 16≦ the highest cell index ≦23, and 
 the processor determines that the size of the cell index field is 4 bytes if 24≦ the highest cell index ≦31.

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