Mobile telephone, apparatus, method and computer implementable instructions product

Abstract

A communication system ( 100 ) is disclosed which uses system frames of a first and a second type. In a system frame of the first type communication with a mobile telephone ( 3 ) is subject to a restriction and in a system frame of the second type communication with said mobile telephone ( 3 ) is not subject to said restriction. It is determined whether or not to communicate with said mobile telephone ( 3 ), in a current system frame, in dependence on whether the current system frame is a first type of system frame or a second type of system frame.

1 - 62 . (canceled) 
     
     
         63 . User equipment (UE) for communication system, the UE comprising:
 a transceiver configured to receive, from a core network entity of the communication system, an Attach Accept message or a Routing Area Update (RAU) Accept message, wherein the received Attach Accept or RAU Accept message includes at least one extended DRX parameter; and   a processor configured to determine a start of an extended DRX cycle based on the at least one extended DRX parameter such that the start of the extended DRX cycle is determined to coincide with the receipt of the Attach Accept or the RAU Accept message where said at least one extended DRX parameter is provided.   
     
     
         64 . The UE according to  claim 63 , wherein the processor is configured to maintain the extended DRX cycle regardless of a Radio Resource Control (RRC) mode of the UE. 
     
     
         65 . The UE according to  claim 63 , wherein the processor is configured to control the transceiver to monitor for paging messages or system information messages in accordance with the extended DRX cycle. 
     
     
         66 . The UE according to  claim 63 , wherein the processor is configured to start the extended DRX cycle upon receipt of the Attach Accept or the RAU Accept message. 
     
     
         67 . A core network entity for a communication system, the core network entity comprising:
 a transceiver configured to send, to a user equipment (UE), an Attach Accept message or a Routing Area Update (RAU) Accept message, wherein the received Attach Accept or RAU Accept message includes at least one extended DRX parameter; and   a processor configured to determine a start of an extended DRX cycle based on the at least one extended DRX parameter such that the start of the extended DRX cycle is determined to coincide with the sending of the Attach Accept or the RAU Accept message where said at least one extended DRX parameter is provided.   
     
     
         68 . The core network entity according to  claim 67 , wherein the processor is configured to maintain said extended DRX cycle regardless of a Radio Resource Control (RRC) mode of the UE. 
     
     
         69 . The core network entity according to  claim 67 , wherein the processor is configured to control the transceiver to transmit, to the RAN, messages that enable the RAN to transmit to the UE paging messages or system information messages in accordance with the extended DRX cycle. 
     
     
         70 . The core network entity according to  claim 67 , wherein the processor is configured to start the extended DRX cycle upon transmission of the Attach Accept or the RAU Accept message. 
     
     
         71 . A method performed by user equipment (UE), the method comprising:
 receiving, from a core network entity of a communication system, an Attach Accept message or a Routing Area Update (RAU) Accept message, wherein the received Attach Accept or RAU Accept message includes at least one extended DRX parameter;   determining a start of an extended DRX cycle based on at least one extended DRX parameter such that the start of the extended DRX cycle is determined to coincide with the receipt of the Attach Accept or the RAU Accept message where said at least one extended DRX parameter is provided.   
     
     
         72 . The method according to  claim 71 , wherein the method further comprises: starting the extended DRX cycle upon receipt of the Attach Accept or the RAU Accept message. 
     
     
         73 . A method performed by a core network entity of a communication system, the method comprising:
 sending, to a user equipment (UE), an Attach Accept message or a Routing Area Update (RAU) Accept message upon a successful Attach or RAU procedure, wherein the received Attach Accept or RAU Accept message includes at least one extended DRX parameter; and   determining a start of an extended DRX cycle based on at least one extended DRX parameter such that the start of the extended DRX cycle is determined to coincide with the sending of the Attach Accept or the RAU Accept message that includes said at least one extended DRX parameter is provided.   
     
     
         74 . The method according to  claim 73 , wherein the method further comprises:
 starting the extended DRX cycle upon transmission of the Attach Accept or the RAU Accept message.