Method for transmission and configuration of ranging channel in accordance with a variety of frame structures in radio communication system
AssigneeLG Electronics Inc.
InventorsDong-Guk Lim, Jin-Sam Kwak, Ki-Seon Ryu, Jong-Young Han
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Abstract
The present invention relates to configuration procedures and transmission of a ranging channel for a synchronization of an uplink of user equipment and a relay station in a communication system which supports a relay, in that the configuration of the ranging channel for acquiring an uplink synchronization may vary in accordance with a variety of frame structures, thereby reducing uplink interferences and performing an uplink synchronization in a stable and quick manner.
Claims13
A method for ranging through ranging channels configured according to a frame structure in a radio communication system which supports a relay station (RS), the method comprising:
- configuring the ranging channels for a communication with the RS, the ranging channels including a first ranging channel located in an uplink subframe of a base station (BS) frame, a second ranging channel located in the uplink subframe of the BS frame, a third ranging channel located in an even-hop RS frame, and a fourth ranging channel located in an odd-hop RS frame;
- and
- performing ranging procedures between a BS and a mobile station (MS) and/or a subordinate RS through the configured ranging channels,
- wherein the third ranging channel has same position and size as the first ranging channel, and the fourth ranging channel has same position and size as the second ranging channel, when the RS is in a transparent relay mode, and
- wherein the third ranging channel has different position and size from the first ranging channel, and the fourth ranging channel has different position and size from the second ranging channel, when the RS is in a non-transparent relay mode.
A method for ranging through ranging channels in a radio communication system, the method comprising:
- setting the ranging channels with a base station (BS) and a relay station (RS) in a division manner;
- and
- performing ranging procedures through the ranging channels by a mobile station (MS),
- wherein the ranging channels are established by reserving a ranging code, or by dividing a specific ranging time or frequency resource,
- wherein the ranging channels include a first ranging channel located in an uplink subframe of a BS frame, a second ranging channel located in the uplink subframe of the BS frame, a third ranging channel located in an even-hop RS frame, and a fourth ranging channel located in an odd-hop RS frame,
- wherein the third ranging channel has same position and size as the first ranging channel, and the fourth ranging channel has same position and size as the second ranging channel, when the RS is in a transparent relay mode, and
- wherein the third ranging channel has different position and size from the first ranging channel, and the fourth ranging channel has different position and size from the second ranging channel, when the RS is in a non-transparent relay mode.
A method for ranging through ranging channels in a radio communication system, the method comprising:
- transmitting an initial ranging code between a base station (BS) and a relay station (RS), and receiving, by the BS, a ranging code measured by the RS;
- receiving, by the BS, ranging information from the RS in response to a request;
- and
- performing, by a mobile station (MS), ranging procedures through ranging channels for uplink synchronization to the BS or the RS, based on the ranging information received from the BS,
- wherein the ranging channels include a first ranging channel located in an uplink subframe of a BS frame, a second ranging channel located in the uplink subframe of the BS frame, a third ranging channel located in an even-hop RS frame, and a fourth ranging channel located in an odd-hop RS frame,
- wherein the third ranging channel has same position and size as the first ranging channel, and the fourth ranging channel has same position and size as the second ranging channel, when the RS is in a transparent relay mode, and
- wherein the third ranging channel has different position and size from the first ranging channel, and the fourth ranging channel has different position and size from the second ranging channel, when the RS is in a non-transparent relay mode.
Dependencies are inferred from the claim text.