Method for transmitting subframe grouping information and decoding subframe grouped frames
AssigneeLG Electronics Inc.
InventorsAe Ran Youn, Jeong Ki Kim, Ki Seon Ryu, Young Soo Yuk
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Abstract
A method for transmitting subframe grouping information is provided. The method includes updating a grouping information field of a media access control (MAC) message, which a serving base station periodically broadcasts to a mobile station (MS), using subframe grouping information determined by a target base station, and periodically transmitting the MAC message to the MS. The method provides downlink signaling for supporting variable Transmission Time Intervals (TTIs) of a base station when handover is performed, thereby minimizing service delay of each mobile station and enabling efficient utilization of resources.
Claims15
A method for performing handover of a mobile station to a target base station by a serving base station in a wireless communication system supporting variable TTI, the method comprising:
- updating, by the serving base station, a grouping information field of a Media Access Control (MAC) message using subframe grouping information of the target base station;
- and
- periodically broadcasting, by the serving base station, the MAC message including the updated grouping information field to at least one mobile station including the mobile station,
- wherein the grouping information field includes frame group indication information indicating whether or not respective frames in a superframe have variable TTI at the target base station.
A method for performing handover of a mobile station to a target base station by a serving base station in a wireless communication system supporting variable TTI, the method comprising:
- updating, by the serving base station, a grouping information field of a handover response message using subframe grouping information of the target base station;
- and
- transmitting, by the serving base station, the handover response message including the updated grouping information field to the mobile station when it has been decided to perform handover of the mobile station,
- wherein the grouping information field includes frame group indication information indicating whether or not respective frames in a superframe have variable TTI at the target base station.
A method for a mobile station to perform handover from a serving base station to a target base station in a wireless communication system supporting variable TTI, the method comprising:
- receiving a Media Access Control (MAC) message that is periodically broadcast from the serving base station, the MAC message including a grouping information field indicating subframe grouping information of the target base station;
- and
- decoding a superframe from the target base station according to the subframe grouping information while performing handover to the target base station,
- wherein the grouping information field includes frame group indication information indicating whether or not respective frames in the superframe have variable TTI at the target base station.
A method for a mobile station to perform handover from a serving base station to a target base station in a wireless communication system supporting variable TTI, the method comprising:
- transmitting a handover request message to the serving base station;
- receiving a handover response message from the serving base station, the handover response message including a grouping information field indicating subframe grouping information of the target base station;
- and
- decoding a superframe from the target base station according to the subframe grouping information while performing handover to the target base station,
- wherein the grouping information field includes frame group indication information indicating whether or not respective frames in the superframe have variable TTI at the target base station.
Dependencies are inferred from the claim text.