Paging method and apparatus considering carrier aggregation environment in mobile communication system
First Claim
1. A paging method of a user equipment in a carrier aggregation environment, the method comprising:
- selecting a component carrier set of the user equipment by selecting a component carrier for each of a plurality of component carrier elements of the user equipment;
camping on a cell through the component carrier selected for each component carrier element;
receiving a paging message from an evolved Node-B (eNB);
verifying a component carrier set that is included in the paging message and thereby is received;
comparing the received component carrier set with the component carrier set of the user equipment; and
setting up a connection with the eNB through the component carrier set of the user equipment, when the received component carrier set is the same as the component carrier set of the user equipment, or when all the component carriers are included in the received component carrier set,wherein the setting up comprises performing a random access through a primary component carrier included in the component carrier set of the user equipment,wherein the performing comprises performing the random access of the primary component carrier using a dedicated preamble of the primary component carrier, when the dedicated preamble of the primary component carrier is included in the received component carrier set.
1 Assignment
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Accused Products
Abstract
Provided is a paging method and apparatus considering a carrier aggregation (CA) environment in a mobile communication system. A paging method of a user equipment may include: selecting a component carrier (CC) set of the user equipment by selecting a CC for each component carrier element (CCE); receiving, from an evolved Node-B (eNB), a paging message containing a CC set; setting up a connection with the eNB through the CC set of the user equipment when the received CC set is the same as the CC set of the user equipment, or when all the CCs are included in the received CC set; and changing the CC set of the user equipment to the received CC set and setting up the connection with the eNB through the changed CC set when the received CC set is different from the CC set of the user equipment.
8 Citations
10 Claims
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1. A paging method of a user equipment in a carrier aggregation environment, the method comprising:
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selecting a component carrier set of the user equipment by selecting a component carrier for each of a plurality of component carrier elements of the user equipment; camping on a cell through the component carrier selected for each component carrier element; receiving a paging message from an evolved Node-B (eNB); verifying a component carrier set that is included in the paging message and thereby is received; comparing the received component carrier set with the component carrier set of the user equipment; and setting up a connection with the eNB through the component carrier set of the user equipment, when the received component carrier set is the same as the component carrier set of the user equipment, or when all the component carriers are included in the received component carrier set, wherein the setting up comprises performing a random access through a primary component carrier included in the component carrier set of the user equipment, wherein the performing comprises performing the random access of the primary component carrier using a dedicated preamble of the primary component carrier, when the dedicated preamble of the primary component carrier is included in the received component carrier set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A user equipment paging in a carrier aggregation environment, the user equipment comprising:
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at least two component carrier elements, each to communicate with an evolved Node-B (eNB) using a different component carrier; a control unit to select a component carrier set of the user equipment by selecting a component carrier for each of a plurality of component carrier elements of the user equipment, and to control the user equipment to camp on a cell through the component carrier selected for each component carrier element; and a paging processing unit to verify a component carrier set that is included in a paging message and thereby is received when the paging message is received from the eNB, to compare the received component carrier set with the component carrier set of the user equipment, and to set up a connection with the eNB through the component carrier set of the user equipment when the received component carrier set is the same as the component carrier set of the user equipment, or when all the component carriers are included in the received component carrier set, wherein the paging processing unit performs a random access through a primary component carrier included in the component carrier set of the user equipment, wherein the paging processing unit performs the random access of the primary component carrier using a dedicated preamble of the primary component carrier, when the dedicated preamble of the primary component carrier is included in the received component carrier set. - View Dependent Claims (10)
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Specification