Method and system for efficient DRX operation during handover in LTE
AssigneeBlackBerry Limited
InventorsWei Wu, James Earl Womack, Zhijun Cai
Life of this patent
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Abstract
A method and system for efficient DRX operation during handover in LTE in which a user equipment expects handover to occur, the method having the steps of: checking whether a no handover initiation decision is received within a predetermined time period; if no, performing the steps of: ensuring the user equipment is not in a DRX sleep period during reception of a handover grant; checking whether a handover grant is received, and if yes, performing a handover procedure; and if no, resuming a DRX sleep interval; and if yes, ending the process.
Claims19
A method for an efficient discontinuous reception (‘DRX’) operation during handover in a Long Term Evolution (‘LTE’) system in which a user equipment expects handover to occur from an enhanced Node B (‘eNB’), the method comprising:
- deciding, at the eNB, whether a handover is to occur;
- if the eNB decided that no handover is to occur,
- receiving at the user equipment from the eNB a message indicating that no handover will occur, within a predetermined time period;
- and
- maintaining a normal DRX cycle at the user equipment;
- if the eNB decided that a handover is to occur, performing at the user equipment the steps of:
- (1) ensuring the user equipment is not in a DRX sleep period during reception of a handover grant;
- and
- (2) checking whether the handover grant is received, and
- if the handover grant is received, performing a handover procedure;
- and
- if the handover grant is not received, resuming the normal DRX cycle.
A system for an efficient discontinuous reception (‘DRX’) operation during handover in a Long Term Evolution (‘LTE’) system comprising a user equipment and an enhanced node B (‘eNB’), the system comprising at least one processor, wherein the at least one processor is configured to:
- decide at the eNB whether a handover is to occur;
- if the eNB decided that no handover is to occur,
- receive at the user equipment from the eNB a message indicating that no handover will occur, within a predetermined time period;
- and maintain a normal DRX cycle at the user equipment;
- if the eNB decided that handover is to occur, the user equipment being configured to:
- (1) ensure the user equipment is not in a DRX sleep period during reception of a handover grant;
- and
- (2) check whether the handover grant is received, and
- if the handover grant is received, perform a handover procedure;
- and if the handover grant is not received, resume the normal DRX cycle.
Dependencies are inferred from the claim text.